Surface tension of the returned acidizing fluids after field tests can be reduced by 56-67% as compared to that of water.
现场酸化试验后的返排残酸表面张力可控至对水降低56—67％。
When slopeland is improved into terraced field, the plantable area is reduced because of the surface of farmland becoming flat and the land used for constructing earth banks.
坡地修成梯田后，因种植田面由坡变平和地埂占地，使种植面积减少；
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