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| Chinese | English |
| 已用水 | used water Wastewater or utilized water from a home, community, farm or industry, which is often discharged after utilization (从家庭、社区、农场或工业场所流出的废水或已利用过的水，往往是利用后排放的水。) |
| 已知时间间隔距 | given interval of time |
|
| Chinese | English |
| 已用水 | used water Wastewater or utilized water from a home, community, farm or industry, which is often discharged after utilization (从家庭、社区、农场或工业场所流出的废水或已利用过的水，往往是利用后排放的水。) |
| 已知时间间隔距 | given interval of time |