Terms for subject Ecology containing return

English	Chinese
amount of return sludge	回流污泥量
circulation return	循环回水
circulation return pipe	循环回水管
condensation return pump	冷凝水回水泵
diminishing returns	递减回报
direct-return system	直接回水系统
double-return siphon	乙字存水弯
environment return	环境恢复
increasing returns to scale	规模收益递增
nutrient return	养分归还
quick return flow	快速回归水流
return period of investment	投资回收期
return pipe of reutilization	重复利用回水管
return port	回流窗口
return riser	回水直管
return-sludge	回流污泥污水处理曝气池用
return temperature of water	回水温度
return trap	回水阱
return trap	回收凝汽阀
return tube	回水管
return water pipe	回水管
separate flow and return system	热水
separate flow and return system	回水分流管系统
sludge return ratio	污泥回比
slurry return	淤泥回流
straw return	秸秆还田
straw return to field	秸秆还田