这种正式名为一氧化二氮的气体对臭氧层所构成的威胁，可能很快就会超过氟氯烃(CFC)化学品。而后者自上世纪八十年代以来就已被限制使用。
The gas, properly known as nitrous oxide, could soon pose a bigger threat to ozone than CFC chemicals, the use of which has been restricted since the 1980s.
漆面的亮度和深度都大大下降，使漆面渐渐发白，构成氧化层，缩短车漆的寿数。
The surface brightness and depth are greatly decreased, the surface oxide layer formed gradually white, paint, shorten life.
细胞色素氧化酶是线粒体电子传递链的最终构成部分，且是线粒体层的完整蛋白质复合体。
Cytochrome oxidase is the terminal component of the mitochondrial electron transport chain and is an integral protein complex of the inner mitochondrial membrane.
试验结果表明，膜层基本上是由钽的氧化物相构成。
The experimental results show that the film layer consists of oxides of tantalum, which has high hardness and good corrosion resistance to alkali.
通过电子能谱分析着色层表面，推断出黄铜的着色膜主要组成为氧化铜，锡的着色膜主要由硒化铜和硒化锡构成。
The main compositions of black coloring films of brass and tin surfaces were deduced through the EDX analysis. The black film on brass should be constructed mainly by copper oxide, and that o...
所述光电转化层主要由电池单元阵列、主电极以及填充其间的二 氧化硅构成。
The photoelectric conversion layer is mainly composed of a cell array, a main electrode and silicon dioxide filled therein.
所述光电转化层主要由电池单元阵列、主电极以及填充其间的二 氧化硅构成。
The photoelectric conversion layer is mainly composed of a cell array, a main electrode and silicon dioxide filled therein.
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