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| Chinese | English |
| 光合光子流量密度 | photosynthetic photon flux density |
| 合流制排水系统 | combined sewer system A sewer intended to serve as a sanitary sewer and a storm sewer, or as an industrial sewer and a storm sewer (一种作为排放清洁污水和雨水，或排放工业污水和雨水的下水道。) |
| 汇合流 | combined stream |