drop valve gear 坠阀装置
bulldozer quick drop valve 推土机速降阀
quick drop valve 快降阀
quick drop valve group 快降阀组件
drop valve engine 带配汽阀蒸汽机
carry-check and quick drop valve 输送
uniform-pressure drop valve [机] 定差减压阀
In chapter 4, the principle drawing of the system is presented after adding a constant-pressure-drop valve.
第四章，给出了系统中加定差减压阀后的结构原理图。
In addition to continuous blowdown service, the Hancock high pressure drop valve is also used on feedwater bypass relief, sampling systems, drains and other services where erosion is extremely severe.
除了连续排污服务，高压降汉考克阀门也用在给水旁路救济，取样系统，排水渠及其他服务的地方水土流失极为严重。
He says a pressure valve on one of the rocket's fuel tanks showed a drop.
他说，火箭燃料箱的一个压力阀显示压力降低。
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