英语语法分析

To reduce the heavy load on dust collectors upflow beds were soon replaced by downflow fluidized beds.

为了减轻粉尘收集器的负荷，上流式流化床不久被下流式流化床所取代。

To reduce the heavy load on dust collectors, upflow beds were soon replaced by downflow fluidized beds.

为了减轻粉尘收集器的负荷，上流式流化床不久被下流式流化床所取代。

At the same flow rate the concentrations of ozone in upflow are higher than that in downflow at the same HRT.

在相同水流量条件下，水由下向上流时水中臭氧浓度，高于由上向下流时相同水力停留时间时的臭氧浓度。