单词	主曝光
释义	主曝光main exposure
随便看	passive alignment passive amentia passive anaphylaxis passive and gate passive antenna passive antiroll system passive armor passive articulator passive atomic frequency standard passive atrophy passive attack passive attention passive attitude control system passive attitude control system (pacs) passive backplane passive backplane bus passive balance of trade passive balance return passive balance return loss passive balun passive beacon passive belt passive body-tilting system passive bond passive bond management