... double extra strong pipe 特高强度管子 double extraction 双重抽提 double fillet welded joint 双面焊缝接口 ...
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double-extraction turbine 双抽汽轮机
double extraction steam turbine 双抽式汽轮机
double-extraction steam turbine 双抽汽轮机
double solvent extraction [冶] 双溶剂萃取
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