pin hole

基本解释

Pin hole bolt ruptures under its service.
销孔螺栓在服役期限内发生断裂。
The third step, the cable soldered to the pin hole soldering.
第三步，把电缆焊接到针焊接孔上。
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The NC boring lathe equipped with this kind of deformable arm can bore special shaped pin hole for piston efficiently, and meanwhile meet the demand of micro meter accuracy.
装有这种新型变形镗杆的NC镗床能高效地镗削活塞异形销孔，并达到微米精度的要求。

But any tax would likely put a pin hole in this balloon, if one can call it that.
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The detail in a photograph taken by a pocket-sized digital camera is roughly in focus from a few feet away to almost infinity—just like a pin-hole camera children make in school.
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