mould powder

• 保护渣

mould powder的用法和样例：

例句

1. In this paper, the relationship between component and melting point of fluorine free mould fluxes was studied by means of regressive orthogonal design.
   论文利用二次正交回归的设计方法对无氟保护渣的成分与熔点的关系进行了研究。
2. It is recommended that research and development work about the special mould flux for the rare earth treated low carbon steel billets be carried out as soon as possible.
   建议尽快进行稀土处理方坯低碳钢专用保护渣的研究开发工作。