... double-screw tuner 双螺旋调谐器 double-seat stop valve 双座截止阀 double-seat valve 双座阀 ...
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航海航天英语词汇大全第965页 ... double-sealvalve双密封阀 double-seatstopvalve双座截止阀 double-seatvalve双座阀 ...
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短语
双阀座截止阀
double seat stop valve
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