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trench cutting 开管沟
trench cutting machine 挖沟机
trench cutting mvery singleine 挖沟机
trench cutting mveryine 挖沟机
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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