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CROSS RATIO [16 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-11-23

English

Subject field(s)
  • Xylology (The Study of Wood)
  • Wood Sawing
CONT

The visual override investigated was knot size, i. e. what size of knot, specifically what knot area ratio(KAR), can be allowed in MSG [machine stress graded] timber to meet the required strength. KAR is defined as the cross sectional area of the knot over the total timber cross section expressed as a percentage.

PHR

KAR method, system.

French

Domaine(s)
  • Xylologie (Étude des bois)
  • Sciage du bois
CONT

[...] cette méthode établit, sans distinction entre espèces, un parallèle entre la proportion de nœuds en coupe transversale (le K.A.R., pour Knot Area Ratio) et le comportement mécanique de la pièce.

Spanish

Save record 1

Record 2 2016-03-16

English

Subject field(s)
  • Engineering Tests and Reliability
DEF

The area under a plot of the applied stress against the grip displacement, the applied stress being determined from the ratio of the tensile force to the minimum initial cross sectional area of the specimen.

OBS

[The tensile work to break] is expressed in kilojoules per square metre.

OBS

tensile work to break: term and definition standardized by ISO.

French

Domaine(s)
  • Fiabilité, contrôle et essais (Ingénierie)
DEF

Aire du diagramme d'essai situé sous la courbe de la contrainte appliquée en fonction du déplacement des mâchoires, la contrainte appliquée étant déterminée par le rapport entre la force de traction et l'aire de la section initiale minimale de l'éprouvette.

OBS

Exprimé en kilojoules par mètre carré.

OBS

travail à la rupture en traction : terme et définition normalisés par l'ISO.

Spanish

Save record 2

Record 3 2013-10-08

English

Subject field(s)
  • Building Insulation and Acoustical Design
CONT

The low damping ratio(about 1% critical damping ratio) is one of the weaknesses of CLT [cross laminated timber] floors.

PHR

Critical, low damping ratio.

French

Domaine(s)
  • Isolation et acoustique architecturale
CONT

Le faible rapport d'amortissement (environ 1 % du rapport d'amortissement critique) compte parmi les points faibles des planchers en CLT [panneaux lamellés-croisés].

PHR

Rapport d'amortissement critique, faible.

Spanish

Save record 3

Record 4 2010-07-27

English

Subject field(s)
  • Mathematics
CONT

If the cross ratio of four points(or four lines) is equal to-1, it is called a harmonic ratio and the last two points are said to divide the first two harmonically.

French

Domaine(s)
  • Mathématiques

Spanish

Save record 4

Record 5 2010-01-29

English

Subject field(s)
  • Radio Transmission and Reception
  • Telecommunications Facilities
DEF

A radio beam having an elliptically shaped cross section in which the ratio of the major to minor axes usually exceeds 3 to 1.

OBS

The beam is broad in the vertical plane and narrow in the horizontal plane.

French

Domaine(s)
  • Émission et réception radio
  • Installations de télécommunications
DEF

Faisceau d'ondes étroit dans un plan et large dans l'autre pour balayer l'espace en tournant autour d'un axe situé dans le second plan.

Spanish

Campo(s) temático(s)
  • Radiotransmisión y radiorrecepción
  • Instalaciones de telecomunicaciones
DEF

Diagrama de radiación del haz de radar que es ancho en dos dimensiones cartesianas y estrecho en la tercera.

OBS

Antenas para aviones y embarcaciones en sistemas de comunicación por satélite; por ejemplo, un diagrama de haz con cobertura horizontal estrecha y vertical amplia. Se utiliza normalmente con radares de vigilancia.

Save record 5

Record 6 2007-04-17

English

Subject field(s)
  • Telecommunications Transmission
DEF

A form of quadrature phase shift keying where the quadrature component of the signal is offset from the in-phase component by half a symbol period.

OBS

As a result the amplitude does not cross zero, and this reduces the peak to average ratio. This has advantages for power amplifiers because it reduces the peak to average ratio and as a result it is used in the reverse link for CDMA [code division multiple access] transmissions.

Key term(s)
  • off-set quadrature phase shift keying

French

Domaine(s)
  • Transmission (Télécommunications)

Spanish

Save record 6

Record 7 2007-04-03

English

Subject field(s)
  • Synthetic Fabrics
CONT

Some acrylic fabrics, particularly knits, approximate the hand of fine wool. Because of the composition and cross section of the fiber, fabrics made from acrylic have a high bulk to weight ratio.

French

Domaine(s)
  • Textiles artificiels et synthétiques
OBS

Le gonflant constitue [...] une caractéristique générale de tous les fils texturés. Au cours des divers traitements les filaments constitutifs [...] sont frisés et leurs ondulations viennent se superposer en désordre d'où l'apparition du volume et quelquefois de l'élasticité [...] le volume initial du fil se trouve augmenté. Ce fil devient plus couvrant et il permet de fabriquer des articles plus légers.

Spanish

Save record 7

Record 8 2003-05-08

English

Subject field(s)
  • Physical Geography (General)
CONT

Figure 2-5 illustrates the paper-strip method of making a point-by-point graphical rectification based on the invarience of the cross ratio.

French

Domaine(s)
  • Géographie physique (Généralités)

Spanish

Save record 8

Record 9 2002-07-19

English

Subject field(s)
  • Metrology and Units of Measure
  • General Mechanics (Physics)
DEF

The ratio of the moment of inertia of the cross section of a beam undergoing flexure to the greatest distance of an element of the beam from the neutral axis.

CONT

The section modulus largely determines the flexural strength of a beam of given material. Also called section factor.

Key term(s)
  • section modules
  • section moduli
  • section moduluses

French

Domaine(s)
  • Unités de mesure et métrologie
  • Mécanique générale (Physique)
DEF

[...] quotient quadratique de l'aire par la distance à l'axe du point de cette aire le plus éloigné de l'axe.

CONT

Le module d'inertie s'exprime en mètres cubes.

OBS

Module de section [exprimé en] cm³ (po³).

Spanish

Save record 9

Record 10 1999-09-24

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Fluid Mechanics and Hydraulics (Physics)
  • Hydrology and Hydrography
DEF

A coefficient in a formula for calculating the discharge of a weir, orifice, or other construction in a waterway, introduced to correct the result for the reduction of the cross-sectional area of the fluid after it passes the constriction as compared to the nominal area of the constriction. It is the ratio of the smallest cross cross-sectional of the fluid after passing the constriction to the nominal area of the constriction.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Mécanique des fluides et hydraulique (Physique)
  • Hydrologie et hydrographie
DEF

Coefficient de correction utilisé dans la formule qui permet de calculer le débit d'un réservoir, d'un orifice ou de toute autre section de passage d'une canalisation ou d'un cours d'eau, et qui exprime le rapport entre la section contractée de la veine liquide et la section réelle de passage.

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Mecánica de fluidos e hidráulica (Física)
  • Hidrología e hidrografía
DEF

En hidrometría, la relación entre el área de una sección transversal normal a la vena contraída y el área nominal del orificio o del vertedero.

Save record 10

Record 11 1999-01-27

English

Subject field(s)
  • Industrial Design
  • Architectural Drafting and Tools
DEF

Dividers having two legs pointed at both ends and joined by an adjustable pivot so that distances measured between the points at one end can be laid off in the same proportion by the points at the opposite end.

CONT

... the proportional divider, used for enlarging or reducing in a desired ratio. Its two legs cross, forming an X, and there are points at all four ends.

OBS

A compass whose two legs are tipped by sharp points is called a divider, the term compass (or pair of compasses) being usually reserved for instruments with one leg tipped by a pen or pencil.

OBS

divider, usually dividers.

OBS

compass, usually compasses ... called also pair of compasses.

Key term(s)
  • proportional compass
  • pair of proportional compasses

French

Domaine(s)
  • Dessin industriel
  • Dessin architectural et instruments
DEF

Compas à quatre pointes, dans lequel la charnière est remplacée par un bouton mobile le long des branches. (On peut ainsi générer des longueurs qui soient dans un rapport voulu avec des dimensions données, en faisant varier dans la même proportion la longueur relative des branches.

CONT

Comment réduire ou agrandir un dessin [...] A l'aide d'un compas de réduction [...] L'instrument étant replié les pointes se chevauchent, un ergot les calant dans cette position. A l'aide d'une crémaillère on déplace l'articulation du compas le long d'une échelle où sont indiquées les proportions.

OBS

Les branches du compas de réduction sont en forme de croix; ne pas confondre avec le compas de proportion dont les branches étendues forment une règle.

Spanish

Save record 11

Record 12 1998-08-21

English

Subject field(s)
  • Telecommunications
  • Radio Transmission and Reception
  • Radar, Radio Guidance and Goniometry
DEF

An antenna producing a major lobe whose transverse cross section has a large ratio of major to minor dimensions.

French

Domaine(s)
  • Télécommunications
  • Émission et réception radio
  • Radar, radioguidage et radiogoniométrie

Spanish

Save record 12

Record 13 1997-09-08

English

Subject field(s)
  • Botany
  • Plant Breeding
  • Genetics
CONT

Tests and trials for ’AC Juniper’ were conducted at the Agriculture and Agri-Food Canada Research Station in Lacombe, Alberta in 1994 and 1995. The trials consisted of four replicated plots per variety with each plot containing four rows. Plot length was three metres.

CONT

Combining ability for grain yield, yield components, and several agronomic and qualitative traits, was studied in a seven-parent diallel cross. The 21 F SUB 1 hybrids and the seven parental cultivars were grown in replicated plot trials sown at normal seed density in three locations in the years 1992 and 1993. The effects of general combining ability(gca) were highly significant for all the traits measured with the exception of seeds per spikelet, while the specific combining ability(sca) effects were statistically significant for grain yield, plant height, heading time, for all the yield components, and for the Chopin alveographic parameters P and P/L ratio/(From an abstract found in Dialog).

French

Domaine(s)
  • Botanique
  • Amélioration végétale
  • Génétique
CONT

Épreuves et essais : Les épreuves et les essais de 'AC Juniper' ont été effectués à la station de recherche d'Agriculture et Agroalimentaire Canada, à Lacombe (Alberta), en 1994 et en 1995. Aux fins des essais, quatre parcelles répétées mesurant 3 mètres de longueur et contenant chacune quatre rangées ont été utilisées pour chaque variété.

Spanish

Save record 13

Record 14 1990-11-14

English

Subject field(s)
  • Geology
  • Hydrology and Hydrography
DEF

The ratio of the weight or volume of sediment in a stream to the weight or volume of water passing a given cross section per unit of time.

French

Domaine(s)
  • Géologie
  • Hydrologie et hydrographie

Spanish

Save record 14

Record 15 1981-01-26

English

Subject field(s)
  • Calculating Procedures (Mathematics)
  • Statistical Graphs and Diagrams
  • Saving and Consumption
OBS

By the arithmetic slope of the indifference curve, we mean this : To find the slope of the curve at, say, point B, take a ruler and place it so that it is just tangent to the curve at B--it touches the curve, but does not cross it either above or below B. Mark the points at which the ruler's edge crosses the two axes. The slope is the ratio of the distance cut off on the vertical axis to the distance cut off on the horizontal axis.

French

Domaine(s)
  • Procédés de calcul (Mathématiques)
  • Diagrammes et graphiques (Statistique)
  • Épargne et consommation

Spanish

Save record 15

Record 16 1980-11-21

English

Subject field(s)
  • Atomic Physics
OBS

Of a moderator, the ratio of the slowing-down power to the thermal macroscopic absorption cross section.

French

Domaine(s)
  • Physique atomique
OBS

Rapport, pour un modérateur, du pouvoir de ralentissement à la section efficace macroscopique d'absorption thermique.

Spanish

Save record 16

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