“standing valve”的概念、定义、翻译、参考文献-科学参考

单词	standing valve
释义	standing valve [`stand·iŋ `valv] ^{PETROLEUM ENGINEERING} A sucker-rod-pump (oil well) discharge valve that remains stationary during the pumping cycle, in contrast to a traveling valve.
随便看	set screw set theory setting angle setting circle setting gage setting ring setting temperature setting time settleable solids test settled settled ground settled snow settlement settler settling settling basin settling chamber settling pond settling reservoir settling rounds settling tank settling time settling velocity setup setup person

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