“Kepler's first law of planetary motion”的概念、定义、翻译、参考文献-科学参考

单词	Kepler's first law of planetary motion
释义	Kepler's first law of planetary motion Each planet moves in an elliptical orbit, with the sun located at one of the foci.
随便看	ultraviolet radiation therapy Ultravist Ultresa ULvWF multimer-targeting agent ARC1779 umbilical cord blood umbilical cord blood-derived hematopoietic CD34-positive progenitor cells umbilical cord blood-derived mesenchymal stem cells umbilical cord blood-derived natural killer cells umbilical cord blood transplantation unaffected Unasyn Unbalanced forces Uncaria tomentosa extract Uncertainty Principle unclassified variant uncontrolled study unconventional cancer treatments underactive thyroid undescended testicles undifferentiated unguent Uniform Acceleration Uniform Circular Motion uniformly-labeled [U-13C] glucose Uniform Speed

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