Read Edit View history 天平动 tiānpíngdòng libration Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 天平动/ 天平動 tiānpíngdòng libration (astronomy) libration 月球的天平动使我们能够观察到月球背面的一小部分。 Edit Delete References Add reference No references for this word.