“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	sound image control sound in film & TV sounding sounding accuracy evaluation sounding balloon sounding board sounding datum sounding device sounding electrode sounding information processing system sounding machine sounding of the lower ionosphere sounding pole sounding rocket sounding rod soundings sounding thinning sound insulation sound insulation and noise reduction materials sound insulation class sound insulation coefficient sound insulation enclosure sound insulation in architecture sound insulation material sound insulation of combined structure

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