gravel bed filter
相关英语词汇推荐
- ozone control
- mulch
- allyl chlorocarbonate
- exhaust emission(s)
- environmental police
- circulating fluidized bed combustor
- flow pattern of the atmosphere
- heavy-duty vehicle
- photoprotection
- World Radiation Network
- fuel metering
- SOTWE,State of the World Environment
- Freon 504
- environmental management of nuclear energy
- deposition
- chlorinated paraffin
- wet meadows
- lead-free
- atmospheric chemistry
- granulate