It is to be found out whether there is other oil resources underground.
地下是否有石油资源还有待于发现。
The reserves of underground water resources are certain and limited at some area.
地下水资源储量对某一地区是一定的，亦是有限的。
The underground mining resources in Changling County are quite rich.
长岭地下矿产资源丰富。
The underground space is one of the important national resources.
地下空间是国家的重要资源。
Hidden underground is a wealth of mineral resources.
地下埋藏着大量的矿产资源。
In the paper, the utilizations on natural energy resources in underground metal mine ventilation.
通过实例，对金属矿山通风中自然能源利用问题进行了分析和论述。
In the paper, the utilizations on natural energy resources in underground metal mine ventilation.
通过实例，对金属矿山通风中自然能源利用问题进行了分析和论述。
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