Warning: file_put_contents(/www/wwwroot/ppbbbu/202081.com/cache/119c50380dea06f2b9237e87052b3b60.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 bastard coal例句_bastard coal英汉例句_bastard coal双解例句_2020年的事情英文词典
The percussive speed of the material is adjustable to obtain different impact so as to separate bastard coal with different hardness. 物料的撞擊速度可以調整，以獲得不同的沖擊力，對不同硬度的煤矸進行分 離。 ip.com