Underhole drilling technology solved the difficulties of drilling in wet layers, deepened the drilling under water, and found an effective method of drilling hi pouring crushing layer.
潜孔锤泡沫钻进技术彻底攻克了潜孔锤在潮湿地层钻进的难关，加深了潜孔锤水下钻进的深度，找到了一条在涌水破碎地层进行潜孔锤钻进的有效途径。
In order to coordinate the smooth implementation of dry acetylene process, it is necessary to traditional wet process calcium carbide crushing process improvement.
为了配合干法乙炔工艺的顺利实施，必须对传统的湿法工艺中电石的破碎工艺进行改进。
The lean magnetite ore can be turned into one that has utilization value by wet preconcentration by magnetic separation after fine crushing to discard most of qualified waste.
通过采取细碎后湿式磁选预选方法，抛除掉大部分合格废石后，可以将该贫磁铁矿变成为具有开发利用价值的矿物。
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