研究了3 8si7钢强韧化处理后的显微组织和性能。

In this paper, the microstructure and properties of 38si7 steel after toughening treatment have been studied.

youdao

研究了3 8si7钢强韧化处理后的显微组织和性能。

In this paper, the microstructure and properties of 38si7 steel after toughening treatment have been studied.

youdao