Warning: file_put_contents(/www/wwwroot/ppbbbu/5356789.com/cache/c518e21be8967ec3cf7427f539cce115.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/5356789.com/index.php on line 55 tunnel kiln reduction例句_tunnel kiln reduction英汉例句_tunnel kiln reduction双解例句_零六五六深蓝词典
The iron powder quality is ensured through tunnel kiln reduction and second reduction by using iron scale of high grade as raw material. 以優質鉄鱗爲原料，加強隧道窰和二次精還原工藝技術琯理，確保鉄粉質量。