Mount battie without losing its definition would take on a blue luminosity . 远处的巴蒂山沉浸在一派蓝茫茫的暮蔼之中,轮廓朦胧。
Mount battie without losing its definition would take on a blue luminosity . 远处的巴蒂丹山沉浸在一派蓝茫茫的幕霭之中,轮廓朦胧。
The cloud should then have an infrared luminosity thousands of times the sun's bolometric luminosity . 云的红外光度应为太阳热光度的几千倍。
The quasars cannot shine for longer than a few million years with their present luminosity . 在几百万年以后,类星体将不可能具有他们今天那样的发光度。
Astronomers tacitly assume that stars of the same luminosity and color all have the same mass . 天文学家心照不宣地默认,光度和颜色都相同的恒星具有相同的质量。
Catherine could think of nothing of the kind, and morris's luminosity seemed almost pitiless . 凯瑟琳当然一筹莫展,莫里斯已把问题说得清楚明白到了毫不留情的地步。
As soon as the contracting cloud becomes opaque to its own infrared radiation, its luminosity will drop abruptly . 一旦收缩云变得对它的红外辐射不透明时,它的光度便要急剧地降低。
Paradoxical as it may seem, the value of a star's luminosity does not depend on the nuclear reactions taking place in the interior . 看来十分奇怪的是,恒星的光度竟然与发生在内部的核反应无关。
In this situation astronomers tacitly assume that stars of the same luminosity and color all have the same mass . 在目前的状况下,天文学家心照不宣地默认,光度和颜色都相同的恒星具有相同的质量。
Some celestial bodies similar to galactic nebulas but without any luminosity sometimes reveal their presence as dark patches obscuring the light of stars beyond them . 某些与银河星云相似但不发光的天体,有时看来象块黑色补丁,遮住了周围的星光。
Luminosity is generally understood as a measurement of brightness. Each discipline, however, defines the term differently, depending on what is being measured.