upward hole的例句大全

The destroy of the roof produced by stress wave of upward hole side blasting is less than that of the level hole blasting. The work of prizing flexible rock decreased by 58. 3%.

上向孔侧向崩矿爆炸应力波对采场项板的破坏比水平落矿爆炸应力波对采场顶板的破坏要小，从而使撬毛工作量减少了58.3%。

the papermaking introduced the construction method for anchor cable with large-angle upward hole in tailrace surge tank.

介绍了尾水调压室大角度上仰孔锚索的施工方法。

gas drainage technology with upward hole installed gasper casing pipe in dynamic pressure district of sublevel caving faces

放顶煤工作面仰斜钻孔安设透气套管抽放动压区瓦斯

exploring the water-transmit crevice developing height with injection water leakage in the upward slant hole

井下仰孔注水测漏法探测导水裂隙带高度的研究

stigmas flat at top, with obtuse margin on lateral sides and abaxially, shortly beaked in front, with an upward stigma hole at tip of beak.

柱头顶端平坦的，钝具具边缘在侧面和背面，在前面具短喙，在喙顶部具向上的柱头孔。

The upward-deflective reason of horizontal drill hole in the east station of

天东站水平钻孔上偏的主要原因