hydraulic ram
短语[电] 冲击起水机
词形变化
hydraulic rams
复数
hydraulic rams
释义与例句
n.
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1.
Used other than figuratively or idiomatically: see hydraulic, ram.
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2.
A water pump in which a flow of water is intermittently halted by a valve so that the flow is forced upward through an open pipe, usually into a reservoir.
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3.
A hydraulic cylinder with a piston activated by pumping hydraulic fluid into the cylinder.