“ventilation shaft”的概念、定义、翻译、参考文献-科学参考

单词	ventilation shaft
释义	ventilation shaft Encyclopedia 工学竖井释 ventilation shaft；air shaft通风井用于地下矿山新鲜风流进入井下或污风排出的井筒。保证将足够数量的新鲜空气连续供给井下各采掘作业面，并将污浊空气从矿井中排出，防止矿井内大气污染，创造安全舒适的井下作业环境。简称风井。
随便看	right regular semigroup right remainder right representation right representative right representative system right residual right resolution right reversibility right reversible semigroup right Riemann integral right ring right R-module right R nodule right R-nodule right rotation rights and interests of overseas Chinese rights and interests of women rights and interests protection of migrant workers rights and obligations rights and power right satellite right screw right secondary element right secondary radical right section

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