英语词汇“first contact, first contact of umbra”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	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	concealed and apparent concealed and semi-concealed terrain concealed and unreported concealed and unsuspected concealed anterograde activation concaves concave saw concave scraper concave sequence concave setting concave setting lever concave-setting lever concealed anterograde penetration concealed antigen concealed arch concealed area concealed articles Concave shape concave-shaped compact concave shapes concave shear concave sheath concave side concave side of blade concave simples method