“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	rational trigonometric sum rational use of drug rational use of drug in aircrew rational use of medicines rational utilization of grassland resource rational variety Rational will rational zero theorem ration certificate for imperial messengers Rationed Tribute ration grazing ratio of centralized water supply ratio of consumption wastes treated ratio of division ratio of external division ratio of greater inequality ratio of internal division ratio of magnification ratio of monofilament deviation ratio of Output-to-input ratio of oxygen to uranium ratio of patient beds ratio of progression ratio of similitute ratio of specific heat capacity

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