vt. rethreading
螺纹修理工具包 thread repair kit
专用螺纹修理包 individual thread repair kit
·2,447,543篇论文数据,部分数据来源于NoteExpress
介绍了煤矿采掘设备破损螺纹孔的多种修理方法。
The paper introduces various kinds of methods on repairing damaged thead holes of mining and developing equipment in coalmines.
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