矿石有害组分含量低，易选性好。
The harmful components content in ore is very low, easy to dress.
煤层气组分浓度异常蕴含着丰富的地球化学成因信息，某些有害组分的异常浓度往往会对矿工人身健康造成影响。
The concentration anomaly of CBM components contains abundant geochemical genesis information; while anomalous concentration of some harmful components will impact miner's health.
石蜡中的苯和甲苯是石蜡中的非理想组分，尤其使用在食品方面时，对人体非常有害。
Benzene and toluene are unideal components of the waxes, especially used on the foods, are very harmful for the body.
矿石的有用组分单一，有害杂质少，金矿物主要为自然金。
The useful composition in the ore is simple, harmful composition is less and the major ore mineral is natural gold.
矿石的有用组分多样，有害杂质少，金矿物主要为自然金。
The useful composition in the ore is multiplicity, the harmful composition is lack and the major mineral is nature Gold.
简要地介绍了瓦斯爆炸后的有害气体的组分。
This paper also gives a brief account about the compositions of the toxic gas...
简要地介绍了瓦斯爆炸后的有害气体的组分。
This paper also gives a brief account about the compositions of the toxic gas...
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