TYB series waterflood pressure regulating systems consist of two cylinder four chamber pump body, electro hydraulic reversing valve, control fluid circuit and control current circuit.

TY B系列调压注水装置由双缸四腔泵体、电液换向阀、控制液路及控制电路组成。

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The effect is to freeze much of the left ventricle, the heart's main pumping chamber, disrupting its ability to contract and effectively pump blood.

其结果是作为心脏的主要动力区的左心室的收缩和有效供血能力受到干扰。

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After you have fired a pump-action shotgun, the only way to chamber another round is to pump it again.

NEWYORKER: A Loaded Gun

Insert a foil pack of powdered insulin into a slot, prime the pump with a lever and push a trigger that releases the cloud of insulin into a clear plastic chamber.

FORBES: Magazine Article