TERMIUM Plus^®

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Aperture diaphragm : is the simplest type of beam restricting device. It consists of a sheet of lead with a hole in the center that determines the size and shape of the beam and attaches directly to the x-ray tube.  1, fiche 1, Anglais, - aperture%20diaphragm

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

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A winding staircase is characterised by the opening in the center of the staircase. Therefore, a winding staircase is not supported by a centrally located column, but instead by an inner beam.  2, fiche 2, Anglais, - winding%20stair

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The curving of a staircase is a European technique that consists of dividing the steps in such a way as to provide a progressive and balanced turn that makes for a comfortable pace. When a stairway has both a straight part and a rotating part, it is typical to curve the steps, that is, to make several of the straight steps progressively oblique.  3, fiche 2, Anglais, - winding%20stair

Fiche 2,  Justifications,  Français

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Dans la partie tournante de l'escalier, les marches peuvent être plus ou moins étroites. Les marches rayonnantes sont plutôt étroites, tandis que les marches balancées s'élargissent dans la partie tournante.  2, fiche 2, Français, - escalier%20tournant

Fiche 2,  Justifications,  Espagnol

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Escalera circular en la que el continuo cambio de dirección se hace a base de escalones o peldaños de abanico.  1, fiche 2, Espagnol, - escalera%20con%20pelda%C3%B1os%20de%20abanico

Fiche 3,  Justifications,  Anglais

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When deciding the length to be provided, consideration should be given to providing an area long enough to contain overruns and undershoots resulting from a reasonably probable continuation of adverse operational factors on a precision approach runway, the ILS localizer is normally the first upstanding obstacle and the runway end safety area should extend up to this facility.  3, fiche 3, Anglais, - ILS%20localizer

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When the track bar is used in conjunction with a VOR [VHF omnidirectional radio range], a lean out of 10° to one or the other side from the signal causes a full deflection of the indicator. If the same pointer is used as an indicator of the ILS localizer, a full deflection will be induced by a 2, 5° diversion from the center of the localizer's beam.  4, fiche 3, Anglais, - ILS%20localizer

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Instrument landing system localizer. A system of horizontal guidance embodied in the instrument landing system which indicates the horizontal deviation of the aircraft from its optimum path of descent along the axis of the runway or along some other path when used as an offset.  2, fiche 3, Anglais, - ILS%20localizer

Fiche 3,  Justifications,  Français

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Sur les pistes avec approche de précision, le radiophare d'alignement de piste ILS [instrument landing system] constitue normalement le premier obstacle qui se présente et l'aire de sécurité d'extrémité de piste devrait s'étendre jusqu'à cette installation.  1, fiche 3, Français, - radiophare%20d%27alignement%20de%20piste%20ILS

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Fiche 4,  Justifications,  Anglais

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... engineers at NASA's [National Aeronautics and Space Administration] Langley Research Center... developed the electron beam freeform fabrication, or EBF3, a process that uses an electron beam gun, a dual wire feed and computer controls to manufacture metallic structures for building parts or tools in hours, rather than days or weeks.  3, fiche 4, Anglais, - electron%20beam%20freeform%20fabrication

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Fiche 5,  Justifications,  Anglais

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STED [stimulated emission depletion] microscopy was the first high-resolution microscopy concept applied more widely for the study of biological questions. As performed in classical confocal laser scanning microscopy, a conventional laser beam is used to stimulate the fluorescent molecules in what is a normal excited spot(of several hundred nanometers in diameter). A second toroidal(doughnut shaped) beam is used to quench the fluorophores by stimulated emission. By overlapping the two beams, fluorescence is allowed only from the center of the spot, which thus generates a much smaller exciting focal spot... Thus, in practical terms, a smaller effective PSF [point spread function] is generated that causes less blurring and, therefore, results in higher resolution. Theoretically, the gain in resolution is not physically limited : it only depends on the power of the quenching laser beam(the higher the power, the smaller the imaging spot becomes).  1, fiche 5, Anglais, - quenching%20laser%20beam

Fiche 5,  Justifications,  Français

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Microscopie de fluorescence à déplétion par émission stimulée (STED) - [On utilise] un microscope de fluorescence à balayage où on superpose au faisceau d’excitation classiquement présent, un faisceau de déplétion mis en forme de doughnut afin de dépasser la limite de résolution imposée par la diffraction. Cette limite est dépassée en utilisant l'émission stimulée pour empêcher l’émission de fluorescence dans la zone associée au doughnut. Ainsi seule la zone intérieure au doughnut peut encore émettre de la fluorescence, et la largeur de cette zone centrale est ajustée grâce à la saturation des effets de déplétion de la fluorescence.  2, fiche 5, Français, - laser%20de%20d%C3%A9pl%C3%A9tion

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Le «quenching» correspond à une relaxation non-radiative des électrons excités vers l’état fondamental. Le RET (transfert d’énergie par résonance) est une forme de «quenching».  1, fiche 5, Français, - laser%20de%20d%C3%A9pl%C3%A9tion

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Fiche 6,  Justifications,  Anglais

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[It] consisted of a horizontal beam with an equal weight at each end suspended at the center by a sensitive torsion fiber. Large external weights were placed alongside the ends of the beam in such a way that their attraction would cause it to rotate. The restoring torque of the fiber, increasing linearly with the rotation balanced the turning moment of the weights.  1, fiche 6, Anglais, - Cavendish%20balance

Fiche 6,  Justifications,  Français

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[La] Balance de torsion de Cavendish [...] consiste en une tige métallique légère suspendue en son centre en un fil très fin [...]. Deux petites sphères très lourdes de masse identique m[1] et m[2] sont fixées à chaque bout de la tige.  1, fiche 6, Français, - balance%20de%20torsion%20de%20Cavendish

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Fiche 7,  Justifications,  Anglais

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... the Alcoa Seaprobe... an all-aluminium, diesel-electric-powered ship,... is 243 feet long, with a beam of 50 feet and a draft or about 13 feet. The Seaprobe is propelled by vertical axis cycloidal propellers fore and aft so she can hold a fixed position on deep water.... At the center of the Seaprobe is a derrick 125 feet high, like those on oil-drilling ships; beneath the derrick is a center well through which drill pipe is lowered.  1, fiche 7, Anglais, - Alcoa%20Seaprobe

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[...], disposant d'un matériel sophistiqué, l'Alcoa Seaprobe américain est un navire en aluminium de 75 m de long et 16 m de large. Possédant des hélices à l'avant et à l'arrière, il peut se maintenir sur une position fixe. Il porte en son centre un mât de charge, un derrick de 40 m de haut, semblable à ceux des pétroliers. Au-dessous se trouve un puits de forage dont le conduit peut s'enfoncer de 25 cm par seconde jusqu'à 6 000 m de profondeur.  1, fiche 7, Français, - Alcoa%20Seaprobe

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Fiche 8,  Justifications,  Anglais

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Ultrasonic waves transmitted for the inspection of a metallic surface at an angle measured from the beam center line to a normal to the test surface.  1, fiche 8, Anglais, - Angle%20beam

Fiche 8,  Justifications,  Français

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Solution suggérée par un traducteur physicien.  1, fiche 8, Français, - inspection%20aux%20ultrasons

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Fiche 9,  Justifications,  Anglais

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The smallest area of light that can be produced by a CRT [cathode-ray tube].  2, fiche 9, Anglais, - spot%20size

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The spot size of the light beam is the diameter of the focused electron beam, which ultimately determines the resolution and quality of the picture. The spot size should be as small as possible to achieve high resolution. Typical spot sizes range from about 0. 1 to 1. 1mm. The spot size is [smaller] at the center of the CRT and [larger in] the corners.  3, fiche 9, Anglais, - spot%20size

Fiche 9,  Justifications,  Français

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Le diamètre du spot est la plus petite zone de lumière qu'un tube à rayon cathodique peut produire. Plus le diamètre est petit, meilleure sera la résolution.  2, fiche 9, Français, - diam%C3%A8tre%20du%20spot

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Fiche 10,  Justifications,  Anglais

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The angle between the radar beam center and the normal to the local topography.  2, fiche 10, Anglais, - local%20incidence%20angle

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local incidence angle: term officially approved by the RADARSAT-2 Terminology Approval Group (RTAG).  3, fiche 10, Anglais, - local%20incidence%20angle

Fiche 10,  Justifications,  Français

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Angle entre l'illumination radar et la normale à la surface terrestre.  2, fiche 10, Français, - angle%20d%27incidence%20local

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Selon l'altitude du radar, l'angle d'incidence varie de la portée proximale à la portée distale. Aussi, affecte-t-elle la géométrie de la visée. L'angle d'incidence local tient compte de l'inclinaison locale du terrain en tout point de l'image.  2, fiche 10, Français, - angle%20d%27incidence%20local

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angle d'incidence local : terme uniformisé par le Groupe de travail de la terminologie de RADARSAT-2 (GTTR).  3, fiche 10, Français, - angle%20d%27incidence%20local

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Fiche 11,  Justifications,  Anglais

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A standard procedure to determine strength along the wood grain [by applying] an increasing load on the center of a beam supported at both ends.  1, fiche 11, Anglais, - static%20bending%20test

Fiche 11,  Justifications,  Français

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Méthode commune pour déterminer la résistance du bois [qui] consiste à appliquer une charge croissante au centre d'une poutre supportée aux deux bouts.  1, fiche 11, Français, - essai%20de%20flexion%20statique

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Fiche 12,  Justifications,  Anglais

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The microwave beam from the satellite solar power station(SSPS) is triggered by a pilot signal beamed from the center of the receiving antenna to provide the necessary phase control to produce a coherent beam. Otherwise, if the beam were to drift, its coherence would be lost, the energy dissipated, and the resulting power density would approximate normal communication signal levels on Earth.  2, fiche 12, Anglais, - satellite%20solar%20power%20station

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Fiche 12,  Justifications,  Espagnol

Fiche 13,  Justifications,  Anglais

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The RBA-5 is a microprocessor controlled five channel photon and electron beam analyzer that provides a simple and reliable way of measuring and displaying dose, dose rate, ratio to center dose, and routinely verifies constancy, flatness and symmetry at any gantry angle.  1, fiche 13, Anglais, - electron%20beam%20analyzer

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Fiche 14,  Justifications,  Anglais

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Half-round slicing is accomplished by mounting the heart of a flitch on an eccentric (off-center) holder and cutting off center.  3, fiche 14, Anglais, - half%20round%20slicing

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half round : Veneer produced by rotary slicing a flitch, or log that has been sawn into two equal halves. The flitch is connected to a metal beam and rotated off center to produce a piece of veneer each time the beam revolves past the knife. The veneer produced is similar in appearance to flat sliced and rotary sliced veneer.  4, fiche 14, Anglais, - half%20round%20slicing

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Fiche 15,  Justifications,  Anglais

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Means for winding the fabric onto the cloth beam off the weaving machine; circumferential or center winder.  1, fiche 15, Anglais, - cloth%20wind%2Dup%20off%20the%20weaving%20machine

Fiche 15,  Justifications,  Français

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Dispositif pour enrouler le tissu sur le rouleau toilier hors de la machine à tisser; enrouleur circonférentiel ou central.  1, fiche 15, Français, - enroulement%20du%20tissu%20hors%20de%20la%20machine%20%C3%A0%20tisser

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Fiche 16,  Justifications,  Anglais

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The condition where the three beams of a color picture tube come together at the aperture mask as they are deflected both vertically and horizontally.  2, fiche 16, Anglais, - dynamic%20convergence

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To maintain this converged condition of the beams as they swing away from the center, it is also necessary to vary their relative angles slightly. This process of changing the beam angle so that it will be in step with the scanning is referred to as dynamic convergence. It is required because the distance traveled by the beams increases as they swing away from the center of the screen.  3, fiche 16, Anglais, - dynamic%20convergence

Fiche 16,  Justifications,  Français

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Convergence obtenue par des corrections distribuées à chaque canon du tube récepteur couleur et variables selon le balayage ligne et trame.  1, fiche 16, Français, - convergence%20dynamique

Fiche 16,  Justifications,  Espagnol