| pressure gradient |
The change in atmospheric pressure per unit of horizontal distance.
출처: www.pfmt.org/fire/glossary.htm
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| pressure |
The force per unit area in a gas or liquid, typically expressed as pounds per square inch in the US. The scientific unit is newtons per m 2 (also known as the pascal). For instance, atmospheric pressure at sea level on Earth equals 14.7 lbs./in 2 = 1.01 x 10 5 newtons per m 2 . The pressure at the center of the Sun is approximately 300 billion Earth atmospheres, or 3 x 10 16 newtons per m 2 .
출처: observe.arc.nasa.gov/nasa/space/stellardeath/stell...
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| pressure |
action of a defender to restrict the time and space available to an offensive player.
출처: www.ayso751.org/glossary.html
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| pressure relief device |
Used to relieve excessive pressure inside tank. Generally operates at 71/2 psi. Self-resealing with target indicator to show operation. Alarm contacts are optional.
출처: www.olsun.com/glossary.html
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| pressure |
Very low tyre pressure (about 60% of normal road pressures), always associated with a low maximum permitted speed (20 kph or 12 mph) used for traversing or recovery from very soft ground. Such low pressures cause extreme tyre sidewall flexing - hence the speed limitation.
출처: www.ww4x4.co.uk/view_information.php
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