... trench crossing 掘沟穿越 trench cutting 开管沟 trench drain 排水沟 ...
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trench cutting machine 挖沟机
trench-cutting 锯槽
cutting trench 挖方路堑
·2,447,543篇论文数据，部分数据来源于NoteExpress
If the cutting ring and eye wear plate is not serious, cutting ring and the eye plate spacing <0.1mm, and no more than 1mm between them in a trench scratches, water law can be used directly.
若切割环和眼睛板磨损不严重，切割环和眼睛板间距＜0.1mm，且它们之间无超过1mm的沟槽划痕，可用直接打水法。
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