英语词汇“room mining, chamber mining”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	room mining, chamber mining
释义	room mining, chamber mining 房式采煤法; 每隔一定距离开采煤房,在煤房之间保留煤柱以支撑顶板的采煤方法。
随便看	contracting expanding nozzle contracting fees contracting for a number of specialized occupations to be done at the same time contracting for a turnkey project contracting for buildings overseas contracting function contracting homotopy contracting hypothesis contracting in contracting-in contracting job contracting jobs along specialized lines and linking payment to output contracting jobs and output quotas to individuals and paying them according to the output contracting jobs to specialized groups and linking remuneration with output contracting, leasing and selling (small enterprises to collectives or individuals) contracting loss contracting mapping principle contracting medullary pin contracting model contracting nozzle contracting officer contracting of new-building contracting of project contracting of the earth contracting operator

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