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油漆间消防管系密性试验。
Painting RM. Fire fighting pipe to be done air-tightness test.
youdao
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一水土分隔网板，系配置于上述空心管之上方；
The water and soil separation net plate is matched above the hollow pipe;
youdao
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一水土分隔网板，系配置于上述空心管之上方；
The water and soil separation net plate is matched above the hollow pipe;
youdao