英语词典矿业英语

bur cut

bur cut

翻译:平行空炮眼掏槽法

同义词

1)bur cut,平行空炮眼掏槽法2)michigan cut,平行空炮眼掏槽3)sumper['sʌmpə],掏槽炮眼4)parallel cut,平行掏槽5)pyramid cut round,锥形掏槽炮眼组6)chambering,炮眼掏壶

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