Machining the spark plug hole and counter bore at a compound Angle.
加工火花塞孔与反孔的复合角度。
Some superiorities of using down hole hammer counter circulation type continuous coring (sampling) method in gold ore exploration are expounded in this paper.
文中阐述了在金矿勘探中应用潜孔锤反循环连续取心（样）的优越性；
This requires only one hole in the sink or counter top, and will free up space in your kitchen.
这在您的厨房里只要求在水槽或桌面的一个孔和释放空间。
Its characteristics include that the counter force is proportional with the horizontal distance of a vertical line where BHA is offset from an open hole.
新的纠斜控制方法以减小测量点与开孔点垂线间的水平距离为目标，可以提高垂钻轨迹的垂直精度。
The screw fixing hole and the screw adjusting holes are tapered counter bores.
螺钉固定孔、螺钉调节孔为锥形沉孔。
The screw fixing hole and the screw adjusting holes are tapered counter bores.
螺钉固定孔、螺钉调节孔为锥形沉孔。
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