ferromagnetic powder

• 铁磁粉

ferromagnetic powder的用法和样例：

例句

1. Magnetic powder tension control is asopted for the rollin and up-wrap.
   收放卷排序均采用磁粉张力控制。
2. It has ceratin significance in promoting the country's technology of detecting damnification with magnetic powder.
   对进一步提高我国磁粉探伤设备的技术水平具有一定的促进意义。