We known its surface is made of oxygen, silicon and aluminum.
它的表面由氧、硅和铝构成。
It's a new technology to treat a wear surface by impregnating in silicon carbide.
用碳化硅挤嵌磨损表面，是一种新的表面处理工艺。
The shape and surface quality are important quality index of non-oriented silicon steel strip.
板形和表面质量是无取向电工钢的重要质量指标。
The shape and surface quality are important quality index of non-oriented silicon steel strip.
板形和表面质量是无取向电工钢的重要质量指标。
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