英语词汇“first contact, first contact of umbra”的意思、用法、释义、翻译、读音、例句、短语、词组-英汉翻译词典

单词	first contact, first contact of umbra
释义	first contact, first contact of umbra 初亏; 主要食相之一，月面和日面外切或月球与地球本影外切的现象。也常指此食相发生的时刻。
随便看	strain reactance strain rebound strain-recording equipment strain-recording instrument strain recovery strain recovery curve strain recrystallization strain regime strain relaxation strain release strain-release point strain relief strain relief clamp strain-relief method strain relief method strain relief tempering strain resistance strain-resistance effect strain resistance material strain resolution strain restoration method strain-restoration method strain retardation strain ring strain rod

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