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-复社网

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	single-pole double-throw single pole double throw single-pole double throw switch single pole double throw switch single-pole double-throw switch single-pole enclosed fused switch single-pole fusing singlepole head single pole head single-pole isolator single-pole knife switch single pole knife switch single-pole line single pole mercury switch single-pole mercury switch single pole piece magnetic head single pole-piece magnetic head single-pole-piece magnetic head single pole receiver single-pole receiver single-pole reclosing single-pole relay single-pole scaffold single-pole single throw single -pole single -throw

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