久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

“吹氧”的英語可以翻譯為：[冶] oxygen blast，blowing oxygen ...

大約20分鐘后,停止吹氧,對鋼液取樣分析.After about twenty minutes the blow was stopped and the metal was sampled.轉(zhuǎn)爐采用高效吹氧技術(shù)可提高供氧強度0.The intensity of oxygen supply and steel output can be increased by 0....

“吹氧”的拼音為：chuī yǎng...