用“pour point depressant”造句大全,pour point depressant造句
polymericpourpointdepressantadditivePreparationofacrylate-styrene-maleicanhydrideterpolymeraspourpointdepressantApourpointdepressant(PPD)forimprovingthecoldfluidityofdieseloilswasstudied.Ateststudyoni...