Ni-hand是什么意思

用法例句

5% hi-Cr cast iron chips was used as substitutes for Ni-hard cast iron chips to produce of Ni-hard cast iron rollers with the other production conditions and process measures unchanged.

在生产轧辊的镍硬(铸铁)过程中,保持其它生产条件和工艺措施不变,使用5%高铬铁屑替代镍硬(铸铁)屑,分析了高铬铁屑对镍硬(铸铁)硬度的影响。

By superheating and holding the molten Ni-hard white cast iron with composition(wB / %) of C 3.

0的镍硬白口铸铁铁液进行过热和保温,研究过热温度和保温时间对该材料的石墨数量和碳化物数量的影响。