... compound oil 复合油 compound rod string 复合抽油杆柱 compound turbodrill 复式涡轮钻具 ...
基于110个网页-相关网页
... tapered ring of tank 储罐的锥形钢板圈 tapered rod string 复合抽油杆柱 tapered roller bearing 锥形滚柱轴承 ...
基于50个网页-相关网页
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compound rod string
tapered rod string
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