纳子属于五金配件之一。 空调、制冷设备、机械设备经常会使用到纳子，一般为铜材质。 纳子的规格按所配相应铜管规格来划分。纳子一般要求内壁厚尺寸适宜，以保证强度。
本学位论文以拟建纳子峡水电站为依托工程，研究了坝区岩土体的主要工程地质性质。
With the support of the Nazi Gorge water power station which is going to be built, the graduate paper studies the main engineering geology properties of the rock-mass and soil-body in the dam area.
佩纳克先生曾经就是这样的小孩(他用了一个法语单词cancre来形容，也就是巨蟹座，蟹子——这种动物横着乱爬，而不是往前行进)。
Mr Pennac was once such a child (he USES the French cancre, as in Cancer, the crab: a creature that scuttles sideways instead of advancing forwards).
例如，在田纳西州的纳什维尔和，2009年第二季度最多旅客预订的酒店排名一下子上升了13位，他们的酒店预订间夜数同比增长了413%。
In Nashville, Tennessee, for example, the most booked hotel during second-quarter 2009 jumped 13 spots before landing in that position and increased year-over-year room nights by 413 percent.
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