But around a black hole the orbital speeds are near the speed of light.
但黑洞周围的轨道公转速度接近光速。
单词 | Orbital speed |
释义 |
Orbital speed
原声例句
Crash Course 天文篇 But around a black hole the orbital speeds are near the speed of light. 但黑洞周围的轨道公转速度接近光速。 Crash Course 天文篇 At aphelion, Mercury's spin is a bit faster than its orbital speed, so the Sun moves rapidly westward across the sky. 于是在远日点时,水星的自转速度会比它的公转速度稍快一点,所以太阳会在天空中快速地向西移动。 Crash Course 天文篇 As they hit our atmosphere, they slow from their ridiculous orbital speed to nearly a standstill, and all that energy has to go somewhere. 当它们撞击我们的大气层时,它们的轨道运行速度会从一个异常惊人的速度下降到几乎停止,而所有的能量都必须流向某个地方。
中文百科
轨道速度天体,一般是行星,天然卫星或人造卫星以及聚星系统中的恒星的轨道速度,是指该天体环绕系统的质心,通常是一个较大质量天体运转的速度。它即可被用来表示天体完成一周运转的平均轨道速度,也可指其瞬间轨道速度,即其运行在某个特定点上的速度。 天体运行在轨道任一点上的速度能够通过该点与中心天体的距离计算出来;而天体的轨道能量则与其所在位置无关,轨道能量等于动能加势能之和。 故,在理想状态下轨道速度( 其中: Note:
英语百科
Orbital speed 轨道速度The orbital speed of a body, generally a planet, a natural satellite, an artificial satellite, or a multiple star, is the speed at which it orbits around the barycenter of a system, usually around a more massive body. It can be used to refer to either the mean orbital speed, i.e. the average speed as it completes an orbit, or the speed at a particular point in its orbit such as perihelia. |
随便看 |
|
英汉双解词典包含3607232条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。