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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 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.
Menstruum crystal is widely used in cephalosporin production in view of its stability and high purity.
溶媒结晶由于其稳定性和纯度高被广泛用于头孢菌素生产中.
They sediment toward the bottom of the centrifuge tube at a velocity.
它们以某一速度向管底方向沉降.
" Even if they keep on eating badly , they won't gain weight,'says CEO Andre G . Pemet.
基塞首席执行官安德-C- 波奈说, “ 病人即使继续胡吃, 也不会再发胖. ”
Cement truck for fixing well is the key equipment cementing the well.
固井水泥车是固井施工作业的关键设备.
Centroid tracking algorithm is widely used because of its simplicity and quick run speed.
形心跟踪算法因为简单、执行速度快而得到广泛采用.
After some treatment of centripetal force , he deduces Kepler's third law.
在向心力的一些论述之后，他推出了开普勒的第三定律。
Objective To evaluate the efficacy of centella triterpenes cream in the treatment of burn wounds.
目的评估积雪苷霜治疗烧伤创面的疗效.
Next year is the centenary of her death.
明年是她逝世一百周年纪念.
Human brains have more than 100 million cells per cubic centimeter.
人脑每立方厘米有一亿多个细胞.
The workmen were cementing the sidewalk.
工人们在人行道上浇筑水泥.
The thermometer shows the temperature in Celsius and Fahrenheit.
这支温度计标有摄氏和华氏两种温度。
The fighting has been centred around the town of Vucovar.
战斗主要集中在武科瓦尔镇周围。
This initial layer, formed of both cellulosic and noncellulosic materials, is called the primary wall.
这头一层由纤维素和非纤维物质构成, 被称作初生壁.