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6 the filtration rate of gas bubbe.
6过滤速度即气布比。
youdao
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In general, the slower the rate of filtration, the higher the quality of the water.
一般而言，过滤速度越慢，水质越高。
youdao
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In general, the slower the rate of filtration, the higher the quality of the water.
一般而言，过滤速度越慢，水质越高。
youdao