The boss retains enormous influence by reason of his position.老板由于自身的地位而一直有极大的影响力。Marian retains a restless, youthful spirit, in search of new horizons.玛丽安怀着一颗年轻、不断进取的心去寻求新的天地。The interior of the shop still retains a nin...
A model asphalt had been separated into four components: asphaltenes , saturates, aromatics and resins.用四组分法将沥青分为饱和分 、 芳香分、胶质、沥青质.The paper introduces the research on RHJ asphalt emulsifiers cations.介绍了RHJ型阳离子沥青乳化剂的研究过程....