1.
Why can radio astronomers observe during the day, whereas optical astronomers are( for the most part) limited to nighttime observing?
译文:为什么射电天文学家可以在白天观测,而光学天文学家的绝大多数观测只能在夜晚进行?
2.
optical antenna
光学[光波段]天线
3.
Research on Optical System of the Lunar-based Optical Telescope (LOT);
月基光学天文望远镜（LOT）的光学系统研究
4.
Astronomers use light-year to talk about distance in space.
天文学家用光年表示宇宙空间的距离。
5.
Optical System of Chinese First Antarctic Astronomical Telescope-CSTAR
首架南极天文望远镜CSTAR的光学系统
6.
The amateur astronomer must consult the exposure meter and not rely on his senses.
业余天文学家必须参照曝光表而不能光靠感觉。
7.
In none of these respects does optical astronomy have any advantage over radio astronomy.
在所有这些指标上，射电天文并不比光学天文逊色。
8.
High-Resolution Image Reconstruction Technology Applied to the Optical Testing of Ground-Based Astronomical Telescopes;
天文高分辨像复原技术检测地基天文光学望远镜成像质量
9.
a type of refracting telescope that is no longer used in astronomy.
在天文学上不再使用的一种折光式望远镜。
10.
Review of Mechanical Structure of Micro-displacement Actuator for Optical Astronomical Telescope
光学天文望远镜用微位移驱动器机构研究综述
11.
HubBle distance
哈勃距离(天文学)
12.
HubBle's law
哈勃定律(天文学)
13.
Razin effect
拉金效应(天文学)
14.
HubBle constant
哈勃常数(天文学)
15.
A serious problem in astronomical spectroscopy is imposed by the absorption of light in the earth's atmosphere.
地球的大气层对光线的吸收，给天文光谱学带来了严重的问题。
16.
a physicist who studies astronomy.
研究天文学的物理学家。
17.
Association of Universities for Research in Astronomy
天文学研究大学协会
18.
single pan digital analytical balance
单盘光学读数分析天平