辉光放电光电子谱仪（GDS）渗层成分检测结果表明表面含碳量可达29.8%，合金渗层的碳含量也呈梯度分布；
GDS testing results indicate the carbon content of the surface reaches 29.8%, the carbon content in the alloyed layer emerges in gradient distribution too.
煤系黄铁矿在化学计量组成中含有碳的矿物，其表面的含碳量均大于40%。
In terms of chemical computation composition, in minerals with carbon, its surface carbon content is more than 40%.
非平衡气氛的碳势定义为：当渗碳反应在钢表面净产生的碳为零时碳钢表面的含碳量。
The non equilibrium carbon potential is defined as the carbon content of steel when the net carbon production rate at surface of steel vanishes.
铸铁件含碳量高，结构疏松、表面有大量砂眼等缺陷，增加了电镀的难度。
High carbon content of iron castings and defects of incompact structure and a great deal of sand holes on the surface of iron castings make it difficult for electroplating.
铸铁件含碳量高，结构疏松、表面有大量砂眼等缺陷，增加了电镀的难度。
High carbon content of iron castings and defects of incompact structure and a great deal of sand holes on the surface of iron castings make it difficult for electroplating.
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