Direct to the longer service time of some old state_owned mine, apply present mine equipments to renew them can reduce investment and inereasing coal output.
针对服务年限比较长的一些国有老矿，运用矿井的现有设备进行技术更新，充分体现了少投入，多产煤的原则。
Inereasing evidence has showed that it was necessary to study the characteristics of bouns pesticide residues when their fates in the soil environment was concerned.
越来越多的证据表明，在涉及农药在土壤环境中归趋的研究中，有必要研究农药的结合残留。
Inereasing evidence has showed that it was necessary to study the characteristics of bouns pesticide residues when their fates in the soil environment was concerned.
越来越多的证据表明，在涉及农药在土壤环境中归趋的研究中，有必要研究农药的结合残留。
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