高压减压阀
high pressure air reducing valve
给水减压阀
Water supply decompression tap
pressure reducing valve
减水减沙
water and sediment reduction
runoff and sediment reduction
reduction of runoff and sediment
runoff and sediment reductions
减水减沙效益
benefits of sediment and runoff reduction
reduction benefits of water and sediment yield
Benefits in reduction of water and sediment
Benefits of runoff and sediment reducing
benefit of water and sand control
the benefits of decreasing runoff and sediment
efficiency of sediment and runoff reduction
benefit of runoff and sediment reduction
benefits to sediment and runoff reduction
减水减沙效益计算
benefit calculation of soil and water conservation
减水减沙作用
function of reducing water and sediment
减压水蒸气蒸馏法
vacuum steam distillation
减压水蒸汽汽提
steam vacuum distillation
排水减压
water-discharging pressure reducer
drain off water and reduce pressure
排水减压法
drainage decompression method