为了实现煤矿安全生产，各矿必须建立稳定的矿井通风系统。
In order to realize safety production in coal mine, ventilation system must be set up.
构造类型影响矿石类型和成矿系列中各矿床类型间的相互关系。
The granite petrotectonic not only controlled the mode of ore deposition, but also influenced the space relations among the ore types in W-Sn metallogenic series.
各矿床具有相似的区域构造地球化学环境、形成规律及成因机制。
They have similar regional tectonic geochemical environment, forming regularity and genetic mechanism.
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