基本解釋大自行恒星英漢例句雙語例句Its aim is to determine the right ascension and declination of the star, its parallax and proper motion.它要測定恒星的經緯度,眡差(即距離),和自行。High proper motion normally indicates a nearby star, so displaying proper motion labels is a quick way of spotting such stars.高自行通常表示是一顆近距離恒星,所以顯示自行標簽是確準此類恒星位置的快捷途逕。proper motion star更多例句詞組短語短語Common proper motion star 自行運動star proper motion 恒星自行proper motion star更多詞組專業(yè)釋義天文學大自行恒星