... 波纹管密封式 bellows seal type 纵贯阀 throughway valve 起落式止回阀 lift check valve ...
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... 纵贯阀 throughway valve ; straightway valve 纵贯研究 longitudinal study 纵贯设计 longitudinal design ...
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短语
纵贯单向阀
straightway check valve
;
inline check valve
纵贯型闸阀
through conduit gate valve
纵贯式隔阂阀
straight way diaphragm valve
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