| 1. | Floor drain outlet
地面排水口 |
| 2. | Must terminate a maximum of 6 inches above a floor drain or external to the building
其终端离地面排水口或建筑物外部高度不能超过6英寸。 |
| 3. | Each soil stack collects effluent from the water closets , the basins , the bathtubs and the floor drains of the toilets of all the units that it serves
每条污水管收集来自水厕洗手盆浴缸和浴室的地面排水口的污水。 |
| 4. | Each soil stack collects effluent from the water closets , the basins , the bathtubs and the floor drains of the toilets of all the units that it serves
每条污水管收集来自水厕、洗手盆、浴缸和浴室的地面排水口的污水。 |
| 5. | However , the investigation found that the u - traps of the floor drains were dried up in many cases because most households had the habit of cleaning the bathroom floor by mopping instead of flushing it with water
但研究发现在很多个案中，连接地面排水口的u形聚水器是乾涸的，原因是大多数家庭只会在浴室拖地，而不会用水冲洗。 |
| 6. | However , the investigation found that the u - traps of the floor drains were dried up in many cases because most households had the habit of cleaning the bathroom floor by mopping instead of flushing it with water
但研究发现在很多个案中，连接地面排水口的u形聚水器是乾涸的，原因是大多数家庭只会在浴室拖地，而不会用水冲洗。 |
| 7. | At the time of the outbreak , the floor drain traps ( which when filled up with water are designed to prevent a reflux and act as a barrier between the floor drain and the soil stack ) in many apartments seemed to have dried out and did not contain water for long periods
出现爆发时，多个单位的连接地面排水口的聚水器似乎已乾涸多时，没有贮水。 （这些聚水器的设计是在贮满水时防止污水倒流，形成地面排水口和排污渠之间的屏障。 ） |
| 8. | For the u - trap to function properly , it must be charged with water . however , it was found in the investigation that the u - traps of the floor drains were dried up in many cases because most households had the habit of cleaning the bathroom floor by mopping instead of flushing it with water
聚水器内须有足够贮水，方可发挥其隔气作用。但研究发现在很多个案中，连接地面排水口的u形聚水器是乾涸的，原因是大多数家庭只会在浴室拖地，而不会用水冲洗。 |
| 9. | Both investigation results pointed to the dry floor drain traps in the bathrooms of individual apartments which had provided an open connection to the soil stack through which contaminated droplets were drawn into the bathrooms when the exhaust fans were turned on . the droplets could have been drawn into the light - well by the powerful exhaust fans and re - entered into other apartments by natural currents through open windows
两个调查结果均显示，由于个别单位浴室的连接地面排水口的聚水器乾涸，排水口与排污渠变得毫无阻隔，当强力的抽气扇启动时，带病毒的液滴可能从地台排水口倒流入浴室，这些液滴有可能被抽至天井，并经由打开的?户随著气流飘进其他单位。 |
