The unsuitable carbonitriding process, internal oxidation, over deep depth of carbonitrided layer and crust like C N compound on the surface are the main reasons to cause fracture.

碳氮共渗工艺选择不当，共渗层过深，表面出现壳状碳氮化合物、内氧化等缺陷组织是造成其断裂的主要原因。

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Over-use N fertilizer may not only cause economic losses, but produce many environmental problems.

过量的施用氮肥，不仅造成大量的经济损失，更重要的是引起一系列环境问题。

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Some music can lull you into concentration loss, or even mini-sleep [n], which can cause horrific accidents.

有一些音乐会使你无法集中注意力，甚至陷入轻度睡眠状态，那样就会造成可怕的惨祸。

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N 6 Sixteen, so that's 16 times log base 2 of 16 and though I'm writing small here, log base 2 of 16, 16 this gives me 4 'cause 2 to the 4 equals 16.

是多少呢？，Well，，N，is，what？,16，那就是16乘以以2为底16的对数6,在这儿我将2写小一些，以2为底16的对数是4，因为2^4等于。

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