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.

youdao

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%.

youdao

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.

youdao