“premium motor oil”的概念、定义、翻译、参考文献-科学参考

单词	premium motor oil
释义	premium motor oil [`prē·mē·ǝm `mōd·ǝr ´ȯil] ^MATERIALS A lubricating oil with improved oxidation stability and having corrosion-preventive and detergent properties; used in internal combustion engines operating under severe conditions.
随便看	symmetry center symmetry class symmetry element symmetry function symmetry group symmetry law symmetry number symmetry operation logarithmic profile of velocity logarithmic scale logarithmic spiral logarithmic transformation logarithmic trigonometric function logarithmic velocity profile logbook logger loggia logging logic logical addition logical comparison logical connectives logical construction logical data independence logical data type

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