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1)  mine water
煤矿矿井水
1.
Discussion on the quality control of determination in mine water;
煤矿矿井水检测质量控制措施探讨
2.
Applied technology of mine water treatment and utilization;
煤矿矿井水处理利用实用技术
2)  acid coal mine drainage
煤矿酸性矿井水
1.
Migration of hazardous elements in acid coal mine drainage;
煤矿酸性矿井水中有害元素的迁移特性
3)  coalmine [英]['kəulmain]  [美]['kolmaɪn]
煤矿矿井
1.
Emergency measures in coalmine during earthquake;
浅议地震时煤矿矿井井下的应急对策
4)  Underground Drainage in Coal Mine
煤矿井下排水
5)  wasted water in coal mine and coal washery
矿井及洗煤废水
6)  coal mine underground
煤矿井下
1.
Study on scheme of IF mobile communication in coal mine underground;
煤矿井下中频移动通信技术方案研究
2.
The status of mobile communication in coal mine underground is introduced, the difficult technical problems including laneway infection for wireless transmission and weak signal reception and noise interference are analyzed, and ways to solve these problems are proposed.
介绍了我国煤矿井下移动通信现状,分析了技术上的难题-巷道对无线传输的影响、弱信号接收和井下环境噪声干扰,提出了解决途径。
3.
To solve the problem of frequent over-grade trip of fast short-circuit protection in high voltage power supply system of coal mine underground,a scheme of adaptive protection system based on independent substation was proposed.
针对煤矿井下高压供电系统速断保护经常越级跳闸的问题,提出了一种基于独立分站的自适应保护系统方案。