... valve metal 阀用铅锡黄铜valve pit 阀坑 valve position indication 阀位显示 ...
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... 阀门 valve 阀室 valve pit 分支阈 branch valve ...
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air valve pit 进出气阀井 ; 放气阀井
wash-out valve pit 放水阀井
valve pit of piston top 让阀坑
valve pit subsidence 沉降破坏
valve e pit 阀坑
·2,447,543篇论文数据，部分数据来源于NoteExpress
Valve door in medium pit Suzhou incorporated company, listed company.
中核苏州阀门股份有限公司，上市公司。
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