“rill crater”的概念、定义、翻译、参考文献-科学参考

单词	rill crater
释义	rill crater [`ril ´krād·ǝr] ^ASTRONOMY A lunar crater that forms part of a rill.
随便看	Ursa Minor Ursa Minor system Ursidae ursids ursolic acid urstromthal Urticaceae Urticales urticaria Urysohn lemma Urysohn theorem usable usable iron ore usable life usable rate of fire U Sagittae use-dilution test user user-defined function user-defined type user exit user friendly user group user interface user mode

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