单词	hand pump
释义	hand pump Thesaurus Noun 1. hand pump - a pump worked by hand pump - a mechanical device that moves fluid or gas by pressure or suction hand pump hand pump A device in a hydraulic system used to manually build up hydraulic pressure as a backup in case of hydraulic pump failure. In some earlier aircraft, the hand pump was also used to transfer fuel from one tank to another in case of electrical or pump failure. See double-acting hand pump. hand pump noun Words related to hand pump noun a pump worked by hand Related Words pump
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