外行 1.(外行的人) laymen; nonprofessional; outsider2.(不懂或沒經(jīng)驗) lay; unprofessional 種莊稼他可不外行。 he's no amateur in farming.; 外行話 lay language; a mere dabbler's opinion
For example , if there is a planet orbiting around the neutron star , it will wobble a little and the pulses will come a little early or late . we can then deduce the mass and the radius of the orbit of the planet from the arrival time of the pulses . this is how the first extrasolar planet is discovered 例如假若有一顆行星圍繞一顆中子星運行,它會令中子星出現(xiàn)搖動,引致脈沖的間隔變長或短,由此我們根據(jù)脈沖周期的變化,可推斷出行星的質(zhì)量和軌道半徑,這亦是天文學(xué)家找出第一顆地外行星時所用的方法。