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An expansion joint in masonry to allow movement due to expansion and contraction.

Related Terms

ASTERN

A backward movement of a vessel

AIR BREATHER

A device permitting air movement between atmosphere and the component in/ on which it is installed.

SIMPLE CYCLE

Referring to the gas turbine cycle consisting only of compression, combustion and expansion.

HOUR-GLASS EFFECT

A radarscope phenomenon which appears as a constriction or expansion of the display near the center of the plan position indicator, which can be caused by a nonlinear time base or the sweep plot starting on the radar indicator at the same instant as the transmission of the pulse. The phenomenon is most apparent when in narrow rivers or close to shore.

POUR POINT

Lowest temperature at which an oil or distillate fuel is observed to flow, when cooled under conditions prescribed by test method ASTM D 97. The pour point is 3°C (5°F) above the temperature at which the oil in a test vessel shows no movement when the container is held horizontally for five seconds.

JIC

Joint Industry Conference.

BELLOWS

Corrugated cylindrical container which moves as pressures change, or provides a seal during movement of parts.

BIMETALLIC COUPLE

A joint or union of two dissimilar metals.

SWELLING

The expansion of an ion-exchange which occurs when the reactive groups on the resin are converted from one form to another.

EXTERNAL EQUALIZER

Tube connected to low-pressure side of a thermostatic expansion valve diaphragm and to exit end of evaporator.
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