脈動變星 的英文怎麼說
中文拼音 [màidòngbiànxīng]
脈動變星
英文
pulsating variable-
Pulsating variables vary periodically, but for some stars, there may be sudden changes in their brightness. such kinds of stars are called eruptive variables. they include
：脈動變星的光度會周期性地改變，但有一些恆星的光度會在毫無先兆下變得光芒萬丈，這種恆星包括新星和超新星皆統稱為爆發變星。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，它會令中子星出現搖動，引致脈沖的間隔變長或短，由此我們根據脈沖周期的變化，可推斷出行星的質量和軌道半徑，這亦是天文學家找出第一顆地外行星時所用的方法。To search for high - velocity molecular emission toward massive star formation regions, and to study the connections between h2o masers, iras objects and outflow properties, we carried out a co observation for a h2o maser sample. we found that most of the objects have excess high velocity emission produced by outflows ; we find a significant correlation between co line full widths and iras luminosities. the widths are proportional to the iras luminosities
通過在大質量恆星形成區搜尋高速分子輻射，並且研究它們與星際h _ 2o脈澤源和所聯系的紅外源之間的關系，我們發現絕大多數源都存在著氣體的高速運動並且它們是由分子外流產生的；我們同時發現在co分子的譜線全寬和所對應源的紅外光度之間存在很好的相關性，線寬隨紅外光度增加而變大。The antenna pointing control is open loop control without feedback. the antenna pointing errors due to antenna tracking motion and satellite attitude adjusting ( trusting ) were analyzed, as well as the influence of damping, tacking velocity and trusting time
文章分析了天線作跟蹤運動和星體作姿態調整時，對星體姿態控制精度和天線的指向精度影響，同時分析了阻尼、跟蹤速度、噴氣脈沖寬度等因素變化對動力耦合程度的影響。Tess s face and neck reflected the same warmth, which each gem turned into an aldebaran or a sirius - a constellation of white, red, and green flashes, that interchanged their hues with her every pulsation
苔絲的臉和脖子也染上了同樣的暖色調，她帶的寶石也變成了牛眼星和天狼星，變成了閃爍著白色紅色和藍色光芒的星座，隨著她的脈搏的跳動，它們就閃現出各種不同的顏色。Pulsating variables are stars that are continuously expanding and contracting and therefore show variations in brightness
例如脈動變星就是恆星本身不斷膨脹收縮，造成光度亦出現相應的變化。Biodiversity of bacterial isolates on three different media from coking wastewater treatment system
型行星傳動的星形布置的脈動式無級變速器運動特性的研究分享友人