用四极质量分析仪对碳化硅颗粒表面吸收的气体进行了分析，获得了碳化硅颗粒的表面化学成分。
The gases absorbed on the surface of SiC particles are analyzed with the quadripole mass analyzer.
结果表明：改变冷却条件和铣削参数，其切削表面化学成分基本不发生变化；
The results show that the chemical composition of milling surface does not change through changing the cooling condition and milling parameters.
局域丝状焦崦的沉积与材料表面化学成分必切相关，其变形成和生长本质上不受材料成分的影响；
The deposition of filamentary coke is closely related to the alloy compositions, but this is not for the lamellar and spheroidal coke.
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