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G
o
o
g
l
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gulley trap
tech.
阴沟存水弯
;
进水口防臭设备
;
进水口防臭阱
;
集水井
(水隔间)
;
下水道进口截污井
;
雨水口截流井
;
雨水口水封
;
雨水管道沉砂井
;
阴沟头
;
水沟排污阱
;
水沟防臭水封
;
沉泥井
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