天文

• 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。
• The error in azimuth must be controlled by astronomical observations for azimuth(and longit ude) .
  方位误差必须观测天文方位角（及经度）来控制。
• He rendered a few parts of the greek works on mathematics and astronomy in his own poor version .
  他用蹩脚译文翻出了一小部分希腊数学和天文著作。
• Arithmetic, geometry, and astronomy were considered the art of the mind and music for the soul .
  算术、几何和天文被看作是心智的艺术和灵魂的音乐。
• Mackie concluded that ancient people probably built the ledge as an astronomical observation platform .
  麦凯断定，古人筑起这个凸岩大概是为了作天文观测台用的。
• The basic physics needed for astronomy, which underpins some of the forthcoming material, is here .
  这里介绍天文家所需要的基础物理，它们是阅读后面的一些内容的基础。
• Common fractions written in the greek or egyptian system were too awkward for astronomical calculations .
  用希腊人或埃及人那套办法写出来的普通分数很不便于作天文计算。
• 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。
• Owing to the broad presentation, there is much that will make this book essential for students of astronomy .
  由于介绍内容的广泛，本书的许多内容对天文专业大学生是十分有用的。