英语语法分析

A new cast steel materials with spheroidal graphite has been studied.

文中研究的是球状石墨铸钢新材料。

A homogeneous weld electrode was developed for welding spheroidal graphite cast iron.

采用该焊条对球墨铸铁焊接时，可以达到同质焊缝要求。

Spheroidal austenite and acicular austenite can be seen during the austenitizing courses at low speed.

慢速加热奥氏体化过程中，观察到球状奥氏体和针状奥氏体。