大师作文网英语翻译A roof-washing system generallyproduces the best results
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英语翻译
A roof-washing system generally
produces the best results
when combined with the use of
filtering devices on gutters,downspouts,
and first-flush devices.
This is especially true when
potable water is the desired end
product.The most common
filtering devices are gutter leaf
screens,which filter large leaves
and other debris.However,
because leaf screens are not
designed to filter smaller matter,
water released from the gutters
will often contain fine debris or
even dissolved contaminants.
Fortunately,the filtering
process can be augmented by use
of a downspout that incorporates
a self-cleaning system called a
rainhead.A rainhead is a square
funnel topped by a screen set at
an angle of about 33 degrees to
the lower horizontal edge of the
funnel.As the water washes over
the angled screen,the debris is
forced toward the screen’s lower
edge and away from the building,
while the rainwater continues
through the funnel screen.
A roof-washing system generally
produces the best results
when combined with the use of
filtering devices on gutters,downspouts,
and first-flush devices.
This is especially true when
potable water is the desired end
product.The most common
filtering devices are gutter leaf
screens,which filter large leaves
and other debris.However,
because leaf screens are not
designed to filter smaller matter,
water released from the gutters
will often contain fine debris or
even dissolved contaminants.
Fortunately,the filtering
process can be augmented by use
of a downspout that incorporates
a self-cleaning system called a
rainhead.A rainhead is a square
funnel topped by a screen set at
an angle of about 33 degrees to
the lower horizontal edge of the
funnel.As the water washes over
the angled screen,the debris is
forced toward the screen’s lower
edge and away from the building,
while the rainwater continues
through the funnel screen.
一个洗屋顶系统通常在与排水沟,落水管上的过滤系统和第一冲洗设备结合时产生最好结果.如果你最后想得到的是可以饮用的水,讷么这个就尤为准确.最普遍的过滤装置是排水沟叶屏,用来过滤大叶子和其他碎片.但是,应为叶屏不是为了过滤小型物体所设计的,所以排水沟释放出来的水经常含有小型碎片甚至是溶解的污染物.幸运的是,过滤过程通过一个叫rainwater的含有自己清洗系统的落水管.rainwater是一个正方形漏斗,上面盖着一个与地面呈33度角的屏幕.当水流过有角度的屏幕,碎片被迫流往屏幕的低边,流出大楼,同时rainwater通过漏斗屏幕继续.
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