Analyzes the former pass system and its problems existing in the production, introduces the design features of modifying the pass during changing the billet and the production situation.

分析了原孔型系统及其在生产中存在的问题，并介绍了坯料切换中孔型修改设计的特点和生产情况。

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A natural pass (elevation 1, 640 feet [500 metres]) that was cut through the Cumberland Plateau in the eastern United States by former stream activity.

自然形成的坎伯兰山口(海拔1640英尺[500米])曾经是水口，峡谷中的水流沿山口穿过美国东部的坎伯兰平原。

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The former should pass all the time; the latter should pass to the degree that customers require.

前者应该在任何时候都通过，而后者应该达到客户所要求的程度。

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Williams made a pair of 3-pointers to pass former Net Vince Carter for most 3-pointers made in a season with 157.

WSJ: Nets sweep Bobcats, increase lead for 4th place

The former France international threaded his pass into the box for Wright-Phillips, who slid his shot past the long reach of Pantilimon.

BBC: Man City 2-0 Timisoara (agg 3-0)

Where kids once played and neighbors used to hang out together, now all that remains could easily pass for a former war zone.

NPR: New Orleans: A Tale Of 2 Cities Since Katrina