| 摘要 |
<p>Bad odor extracting system from water closet through double suction, comprising two pipes one applied to water closet bowl and the other to the water closet seat, the two pipes have holes in internal middle section for aspiration; the holes of the pipe applied to the water closet bowl correspond to an equal number of holes in the upper border of the water closet bowl, the aspiration in both piped is carried out by an aspiration pump.</p> |
