degree of salinity的用法和樣例：
例句
- To control groundwater critical depth to prevent the soil from salinity depends on the pumping groundwater.
開(kāi)采地下水，以抽代排，把地下水位降到臨界深度以下，防止鹽漬化。 - The deference stages of comprehensive harnessing of saline soil and the characteristics are analyzed.
總結了我國鹽漬化防治所經(jīng)歷的不同階段及特點(diǎn)。
