proper motion star
常见例句
- Its aim is to determine the right ascension and declination of the star, its parallax and proper motion.
它要测定恒星的经纬度，视差（即距离），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颗近距离恒星，所以显示自行标签是确准此类恒星位置的快捷途径。 返回 proper motion star