head pressure 水头压力 ; 压头 ; 排出压力 ; 落差压力
intake well head pressure 注入井井口压力
flowing tubing head pressure 自喷井井口压力
Well head pressure 井口压力
head pressure solenoid 磁头压力螺线管
gas head pressure 气压落差
To provide accurate reading of head pressure , the line should connect at the base of the water column.
为了提供精确的水头压力参数，管线应该连接到水柱的底部。
This is referred to as head pressure.
这被称为排出压力。
The head pressure increases when the melt viscosity and temperature decreases, so the products will have good shape and favorable stability.
温度降低时，熔体黏度大，机头压力增加，挤出制品压的较密实，形状稳定性好。
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