TERMIUM Plus^®

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Two-dimensional shear wave elastography(2D-SWE) uses [real-time, high-frequency] ultrasound acquisition of... shear waves generated by a radiation force impulse induced by focused ultrasonic beams.  4, fiche 1, Anglais, - two%2Ddimensional%20shear%20wave%20elastography

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2D-SWE is integrated into a conventional ultrasound imaging machine ...  5, fiche 1, Anglais, - two%2Ddimensional%20shear%20wave%20elastography

Fiche 1,  Justifications,  Français

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L'élastographie par ondes de cisaillement bidimensionnelles est une modalité d'élastographie ultrasonore intégrée aux appareils d'échographie standards.  5, fiche 1, Français, - %C3%A9lastographie%20par%20ondes%20de%20cisaillement%20bidimensionnelles

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Fiche 2,  Justifications,  Anglais

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Blood Velocity Meter. A continuous ultrasonic wave in the megahertz region is scattered as it passes through blood. The back-scattered part of the signal can be collected by a receiving transducer next to the transducer emitting the continuous waves, and the returning signal will be shifted in frequency in proportion to the velocity of the blood in the vessel. This Doppler frequency shift can be detected and applied to a frequency meter(e. g. zero crossing detector) or frequency analyzer to produce a signal proportional to blood velocity.  2, fiche 2, Anglais, - blood%20velocity%20meter

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Fiche 3,  Justifications,  Anglais

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The better class of ultrasonic detector has a built-in compensating device to allow for daily differences in the volume of the contents of a room.  1, fiche 3, Anglais, - ultrasonic%20detector

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Ultrasonic systems detect motion by filling an area with inaudible sound and then monitoring the standing wave pattern. Any movement in the area disturbs the wave pattern and triggers an alarm.  2, fiche 3, Anglais, - ultrasonic%20detector

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Appareil émettant des ondes acoustiques d'une fréquence donnée et qui, lors d'une modification de la fréquence originale, déclenche l'alarme.  2, fiche 3, Français, - d%C3%A9tecteur%20%C3%A0%20ultrasons

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Avec les détecteurs à ultrasons, on débouche sur des systèmes plus évolués, mais de maniement plus délicat.  3, fiche 3, Français, - d%C3%A9tecteur%20%C3%A0%20ultrasons

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Fiche 4,  Justifications,  Anglais

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[An] ultrasonic wave propagation in which the wave is guided between two parallel surfaces of the test object.  1, fiche 4, Anglais, - Lamb%20wave

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The mode and velocity depend on the product of the test frequency and the separation between the surfaces.  1, fiche 4, Anglais, - Lamb%20wave

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onde [ultrasonore] générée entre deux surfaces libres parallèles.  2, fiche 4, Français, - onde%20de%20Lamb

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Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

Seam Testing Methods... There are number of procedures available which have applicability on different geomembranes... the ultrasonic impedance plane method works on the principle of acoustic impedance. A continuous wave of 160 to 185 kHz is sent through the seamed liner and a characteristic dot pattern is displayed on a CRT screen. Calibration of the dot pattern is required to signify a good seam; otherwise, it is not. The method has potential for all types of geomembranes but still needs additional development work.  1, fiche 5, Anglais, - ultrasonic%20impedance%20plane%20method

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Fiche 6,  Justifications,  Anglais

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Experimental ultrasonic wave propagation in sedimentary rocks : Signal processing related to the failure process... In a diagram with stress deviator versus confining pressure, the existence of correlations is revealed between strain and damage fields and the evolution of ultrasonic parameters, especially velocity and quality factor.  2, fiche 6, Anglais, - stress%20deviator

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Tenseur des contraintes obtenu en soustrayant la moyenne des composantes de contrainte normale d'un tenseur de contraintes, de chacune des composantes de contrainte normale.  2, fiche 6, Français, - d%C3%A9viateur%20des%20contraintes

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Fiche 7,  Justifications,  Anglais

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Active motion detectors fill the volume in range of the detector with either ultrasonic, microwave, or sonic energy. The transmitted energy forms a standing wave pattern as it reflects from the objects and walls in the room. Some of this energy is reflected back to the detector receiver, where it is received and processed. When there is a disturbance in the received signal due to someone moving within the protected area, the processor initiates an alarm.  1, fiche 7, Anglais, - active%20motion%20detector

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Active detection system: a ... system which emits energy as a means of detection.  2, fiche 7, Anglais, - active%20motion%20detector

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continuous(wave) ultrasonic detector  1, fiche 8, Anglais, - continuous%20ultrasonic%20detector

Fiche 8,  Justifications,  Français

Record number: 8, Textual support number: 1 OBS

Un faisceau continu d'énergie ultrasonique est dirigé vers le véhicule. Le changement de fréquence dans l'énergie réfléchie dû à l'effet Doppler est détecté.  1, fiche 8, Français, - d%C3%A9tecteur%20%C3%A0%20ultrasons%20%C3%A0%20ondes

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