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造父变星是一种光线按规律周期发生变化的恒星.用英语怎么说？

造父变星是一种光线按规律周期发生变化的恒星.

Cepheid variable stars are stars whose brightness changes at regular periods.

相关词汇
cepheid variable stars are whose brightness changes at regular periods

cepheid

造父变星；

variable

adj. 变化的，可变的，[数]变量的，[生]变异的；n. 可变因素，变量，易变的东西；

stars

abbr. specialized training and reassignment students 经过专门训练后再分配的学生，stationary automotive road stimulator (Toyota) 汽车公路固定刺激物（丰田汽车）；n. 星( star的名词复数 )，明星，（尤指旅馆或餐馆的）星级，星象（根据人出生时天体的位置而描述的命运）；

are

vi. （用于第二人称单复数现在时，第一、三人称复数现在时）是；n. 公亩（等于100平方米）；

whose

pron. 谁的，那个人的，那些人的，他的，他们的；

brightness

n. 亮度，明亮，光泽度，灯火通明；

changes

n. （会令人感兴趣或可喜的）变化( change的名词复数 )，换车，辅币，变迁；

at

prep. （表示位置）在，在（某时间或时刻），以，达， 向，朝；n. 阿特（老挝辅币单位，100 阿特 = 1 基普）；

regular

adj. 有规律的，规则，整齐的，不变的，合格的；n. 正规军，主力（或正式）队员，常客；adv. 定期地，经常地；

periods

n. 周期，时期( period的名词复数 )，（一段）时间，学时，句号；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
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The Blue Room is the centerpiece of the White House decorations.
蓝屋历来是白宫圣诞装点的中心.
The standard wine bottle contains 75 cl [ centiliter ].
标准葡萄酒瓶的容量为75 厘 升.
This experiment researched the drawn force of the single centrum pedicle screws.
此次实验研究的是单个椎体的螺钉拔出力.
This Roman Centurion was at Capernaum a town on the edge of the Sea of Galilee.
这个罗马的百夫长是驻在加利利海边的迦百农城.
The celt survival rate was higher in cryoprotectant containing K - SFM than DMEM.
以K-SFM培养液配制的冻存液冻存的细胞复苏后的存活率明显高于以DMEM配制 的培养液.
One authority made a census of the spiders in a grass field in the south of England, and he estimated that there were more than 2,250,000 in one acre.
一位权威对英国南方一块草坪上的蜘蛛作过统计, 他估计每英亩有2,250,000多只蜘蛛.
It is ideal casing centralizer for both deflecting and horizontal well.
双弓形弹簧片套管扶正器是斜井、水平井理想的套管扶正工具.
Even so, the idea of a centi - jour ( 14.4 minutes ) has cropped up on several occasions since.
尽管如此,从那时起, 百分日 ( 每一等分14.4分钟 ) 的概念却已见诸于有些场合.
His paintings look as if they have been knocking around for centuries.
他的画看上去就像是已经存在几百年了.
Cefadroxil is important as an cephalosporin antibiotic.
头孢羟氨苄是重要的头孢类抗生素.
The greatest polemicist of the 20th century must be Leon Trotsky.
20世纪最了不起的辩论家非列昂·托洛茨基莫属。
The deposition velocity of Paleozoic, Mesozoic and Cenozoic assumes unimodal pattern.
在沉积速率分析曲线上,往往是古生代 、 生代和新生代呈单峰状态.
When he visits China next month, the topic will be the centrepiece.
他下月访华时, 气候变化将是中心议题.
Objective : To investigate the etiology, clinical characteristics and therapy of eosinophilic cellulitis.
目的: 探讨嗜酸性蜂窝织炎的病因, 临床特点及治疗方法.