range coal

基本解释

To enhance the measurement precision and range of coal mine internal-caused fire, a novel arithmetic of sensor data fusion was presented.
煤矿内因火灾是煤矿生产安全的一大隐患，为解决单一探测方法的预测精度和适用范围受到很大限制的问题。
The enlargement of hole diameter increased the exposed area and pressure releasing range of bored coal seam, and raised gas drainage amount and discharging effect from holes.
通过扩大钻孔的直径，从而达到增加钻孔的煤层暴露面积和卸压范围，增大钻孔抽排瓦斯量，提高钻孔的抽排效果。
BBD Ball Mill is a widely used milling device in power plant system. It has the advantages of low energy consumption, high efficiency, widely range of grinding coal, and so on.
双进双出磨煤机是在电厂系统中广泛应用的一种制粉设备，它具有能耗低、生产效率高、研磨煤种范围广等优点。

Although Mr Dlamini will not have operational oversight of the mining businesses in South Africa, which range from platinum to coal, he will have a seat on the group's executive committee in London.
ECONOMIST: Face value
The company owns and operates a fleet of 29 dry bulk carriers that transport a wide range of commodities, including coal, iron ore, grains, bauxite, phosphate, fertilizers and steel products.
FORBES: Gurus Get Into Used Cars
The group now has interests across a range of commodities from nickel, coal to gold.
FORBES: South Africa's New Richest Man