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。

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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；

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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。

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Just when the United States and India were at last warming to each other, India's nuclear-bomb tests three years ago, provoking counter-blasts from Pakistan and blowing a hole through the global anti-proliferation effort, brought on a new chill.

ECONOMIST: Time to lift post-nuclear sanctions on India?