High quality concentrate is obtained by using new barrel medium and packed flotation machine.
本研究采用新型筒棒介质和充填式浮选机进行磨矿和浮选，收到了良好效果。
Ork barrel could be classified into slight-fire roasting ork barrel, medium-fire roasting ork barrel and heavy-fire roasting ork barrel according to the roasting degree.
按橡木桶内部烘烤程度，橡木桶分为微烤橡木桶、中火烘烤橡木桶和强烤橡木桶。
The barrel liquid-cooling technology is widely used in ground-based air-defense and anti-missile small-caliber automatic gun and ship-borne medium or small caliber guns.
身管液冷技术在陆基防空反导小口径自动炮和舰载中、小口径火炮中被广泛采用，研究身管液冷状态下的温度分布对于火炮发射安全性和武器效能具有重要意义。
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