... 快速操纵器quick-acting operator 滑动阀杆sliding stem 正齿轮传动spur gear operated ...
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... Valve Style 阀门类型 Rotary 旋转 Sliding Stem 直行程 ...
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·2,447,543篇论文数据，部分数据来源于NoteExpress
Carrefour posted a large rise in net profit and said it is giving more autonomy to its all-under-one-roof stores in a bid to stem sliding sales in France.
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