博士 (理学)
Wikipedia definition
1. Doctor of ScienceDoctor of Science, usually abbreviated Sc.D. , D. Sc. , S.D. or Dr. Sc. , is an academic research degree awarded in a number of countries throughout the world. In some countries, "Doctor of Science" is the title used for the standard doctorate in the sciences; elsewhere the Sc.D. is a "higher doctorate" awarded in recognition of a substantial and sustained contribution to scientific knowledge beyond that required for a Ph.D.
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