他快速地关闭了阀门，但他的一只手不小心被一个尖锐突起物划伤了。
He quickly shut the valve, but one of his hand was hurt by a spine carelessly.
薄膜中大量的纳米微孔结构及尖锐的峰状突起增加了表面的粗糙度。
Roughness of the thin film surface is due to its sharp protuberance and nano-size pore structure.
薄膜中大量的纳米微孔结构及尖锐的峰状突起增加了表面的粗糙度。
Roughness of the thin film surface is due to its sharp protuberance and nano-size pore structure.
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