And usually request steel phosphorus content of less than 0.045%, lower request high quality steel.

因而通常请求钢中含磷量小于0.045%，优质钢请求更低些。

youdao

And usually request steel phosphorus content of less than 0.045%, lower request high quality steel.

因而通常请求钢中含磷量小于0.045%，优质钢请求更低些。

youdao