在观察软件目录里的一个星系时，玛丽安注意到一个亮度极高的亮点正远离星系中心，很可能是一个超大质量黑洞。
Looking at one galaxy in the Catalog, Marianne noticed that the point of light was offset from the centre and yet was so bright that it could well be associated with a supermassive black hole.
它的中心是由3个年轻恒星组成的星系群，其亮度超过太阳千倍。
At its heart is a cluster of three deeply embedded young stars, which are each several thousand times brighter than the sun.
半路上的亮度，芦笛岩是西北七公里的桂林的中心。
Half way up the Brightness Hill, Reed Flute Cave is seven kilometers northwest of the center of Guilin.
如果亮度标志着质量，那么大部分质量就应该集中在星系的中心。
If luminosity were a true indicator of mass, most of the mass would be concentrated toward the center.
我们曾经认为在典型螺旋星系的明亮中心以外，亮度随距中心距离的增加而急剧减弱。
It has been known for some time that outside the bright nucleus of a typical spiral galaxy luminosity falls off rapidly with distance from the center.
同步辐射光源的尺寸、散角和中心亮度是装置的重要参数。
The size, angle spread and the brightness of the center of the synchrotron radiation light sources are very important to the users.
靠近边缘的光谱状亮点的亮度要小于靠近中心的亮点。
Those spectra nearer the periphery of the objective are dimmer than those to the central spot.
建立了兼含粗糙度与波面像差影响的中心点亮度比公式及其像质评价准则。
The formula and criterion of the Strehl intensity ratio consisting of the aberration and roughness are developed.
为有效识别光斑中心，针对无衍射激光斑光图像特点，提出了一种由亮度梯度确定图像中心的方法。
A method to center an image by brightness gradient is proposed based on the features of the non-diffracting laser circular image.
有时候在进行心脏磁共振成像检查中，需要向静脉注射一种染剂以提高图片中心脏和血管的亮度。
Sometimes during cardiac MRI, a special dye is injected into a vein to help highlight the heart or blood vessels on the images.
当气体从爆炸的中心远离时，它的亮度会减弱，并和附近的星际介质发生交互作用，产生各种颜色和波段的光。
As gas flies away from the detonated star, it decays and reacts with the interstellar medium, producing light in many different colors and energy bands.
当气体从爆炸的中心远离时，它的亮度会减弱，并和附近的星际介质发生交互作用，产生各种颜色和波段的光。
As gas flies away from the detonated star, it decays and reacts with the interstellar medium, producing light in many different colors and energy bands.
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