中矿 meaning in Chinese

middling product
middlingproduct

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It said that among other things , companies have let alternative escape routes flood rather than maintain them
据说在其他矿难中矿主们宁可让矿井逃生通道被水淹也舍不得去维修它们。
To increase the fertilizer utilization in the latosol , studying the fertilizer leaching and conversion characteristic , such as leaching velocity reaching amount , conversion path etc , seem to be extremely important . however , hitherto the study of fertilizer nutrient leaching characteristic are scanty , only some on the mineral nutrient derived from latosol
要提高化肥在砖红壤中的利用率，研究其淋溶及转化特征则显得极为重要，如淋失速度、淋失量、转化途径等，然而迄今为止，在砖红壤上这方面研究报道较少，且主要是针对砖红壤中矿化出来的营养元素，而缺乏对化肥在砖红壤上淋失特征的研究。