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英语翻译Capacities of first-flushdevices may vary depending onth

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英语翻译
Capacities of first-flush
devices may vary depending on
the catchment size and ultimate
use of the rainwater.Rainwater
collected from a rooftop will
typically be cleaner than stormwater
collected from a surface or
pavement area,which means the
storage capacity of the first-flush
device does not need to be large.
Stormwater collected from surface
or pavement areas may
require longer settling periods
for suspended solids and an
absorbent pillow to remove oil
and grease; therefore,a more
sophisticated and larger capacity
first-flush device is required.
第一,冲洗装置的能力可能取决于集水面积和最终的雨水利用.雨水从屋顶收集通常会比从表面或行人路收集雨水更清洁,这意味着第一冲洗设备的存储能力,并不需要大量收集.雨水收集路面表面或地区可能需要更长的悬浮物和时间,以消除油脂,因此,一个更为复杂和更大容量的第一冲水装置是必要的.