vorbohren rough-bore的意思|示意

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vorbohren rough-bore


vorbohren rough-bore的网络常见释义

预钻孔 ... 斜钻孔 deviating hole; oblique hole; obliquehole; splay 预钻孔 pre-drill; predrilling; vorbohren rough-bore 再钻孔 rebore ...