历史上的今天：The Byrds发行首张专辑 Th... ... ·历史上的今天：菲律宾海战爆发 Battle of the Philippine Sea takes place ·历史上的今天：美联邦通信委员会 FCC is established ·历史上的今天：8小时工作制 8-hour work day ...
The method to calculatemainairflow capacity ofFCC unit is expounded. Flow capacity revisionmodeland the relative revision coefficient have been established.