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. 答案 登录 注册 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。 出自:文鼎教育 >> 乐山师范学院专业英语