发布时间:2025-01-31 18:56:33
答:
选罗茨风机要两参数:
压力风量.先根据BOD除量计算需氧量,再根据曝气设备氧转移效率及其些附加条件计算风机工作状况需气量,根据空气需要量池体水深选择风机,
相关计算公式《三废设计手册----废水卷》,,情况建议风量8立每,压力50KPA-55KPA即,选择百事德或锦工罗茨风机,实惠耐用,让算.
求这种推拉窗的窗纱怎么开窗纱是上下式的想关上外面的窗户不知道怎么开
2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33想在自己有产权证的地下停车位上装一个升降机这样可以一个位置放两个车想问这主意有什么问题么
2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33 2025-01-31 18:56:33