搜题
问题   更新时间2023/4/3 12:59:00

2、 In a piston pump, liquid is drawn through an inlet check valve into the cylinder by the withdrawal of a piston and then is forced out through a discharge check valve on the return stroke.

参参考考答答案案:: 活塞泵当活塞退后时液体通过进口活门被吸入液缸,当活塞向前运动时将液体通过出口活门压出液缸。
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