因此，围绕着竖炉法直接冶炼不锈钢母液的实践和理论研究这一主线，开展了卓有成效的研究工作。

Therefore, fruitful research have been carried out according to the main line of practice and theory of directly producing master alloys by a shaft furnace.

youdao

因此，围绕着竖炉法直接冶炼不锈钢母液的实践和理论研究这一主线，开展了卓有成效的研究工作。

Therefore, fruitful research have been carried out according to the main line of practice and theory of directly producing master alloys by a shaft furnace.

youdao