常見(jiàn)例句雙語(yǔ)例句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(diào)整，以獲得不同的沖擊力，對(duì)不同硬度的煤矸進(jìn)行分 離。ip.com 返回 bastard coal