尽管有了正确的中译, 我也不知那是什么。 Therefore, this is not a problem of language, but a matter of knowledge of machincal engineering.
= = = = = =
有趣的是, what is 泵? 这只是pump之译音 (也有译为“帮浦”)。 不过, “泵”已溶入现代汉字, 大家都理解“泵”is a mechanical device that moves fluid or gas by pressure or suction.
(康熙字典 : 【備考】【巳集】【水字部】泵 音流, 无解释)