The invention has excellent filtration reduction property under high temperature and high salinity drilling environment.
本发明在高温、高盐度钻井环境下具有优异的降滤失性能。
The Dead Sea has a high level of salinity.
死海的盐分浓度很高。
However farmland extend quickly, and the area of salinity still keep been high degree.
耕地扩张很快，而土壤盐渍化面积仍然居高不下。
However farmland extend quickly, and the area of salinity still keep been high degree.
耕地扩张很快，而土壤盐渍化面积仍然居高不下。
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