self-operated differential pressure control valve是什么意思 self-operated differential pressure control valve怎么读
self-operated differential pressure control valve的相关资料
selfn.自己;本性;自我pron.我自己;你自己;他或她自己adj.始终如一的;同一类型的;性质不变的v.近亲繁殖;自花授粉
self-pleased轩轩自得; adj.;自满的
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