This paper studies shear effect on the viscosity and gel point of Daqing waxy crude beneficiated* by pour point depressant (PPD) through experiments.是什么意思_This paper studies shear effect on the viscosity and gel point of Daqing waxy crude beneficiated* by pour point depressant (PPD) through experiments.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句