防止核材料流失 prevent the diversion of nuclear materials

防止土壤流失 halt soil erosion slow down

防止钙质流失 prevent calcium from leaching out ; prevent calcium from

防止税收流失 Prevention of tax evasion

防止水土流失 prevent water losssoil erosion ; prevent water loss and soil erosion

水土流失与防治 Soil Erosion And Control

防止流失举措 counter measures for prevent loss

防治水土流失 Prevention and control of water soil erosion

流失防范机制 loss precaution mechanism

水土流失防治费 soil and water conservation fee