辐射

• The concepts of radiant emittance and of irradiance are complementary .
  辐射的发射强度和辐照度是两个互补的概念。
• Our knowledge regarding the effects of ionizing radiations is still meagre .
  我们关于电离辐射效应的知识仍很不足。
• Illuminance of illuminating radiation is always measured in photometric units .
  照明辐射的照度通常是以光度为单位。
• Radio astronomy has greatly increased our understanding of the universe .
  辐射天文学大大地增进了我们对宇宙的了解。
• Radioactivity is the ejection of particles or radiation from the nucleus .
  放射性是原子从核中射出粒子或辐射的现象。
• The material must be sensitized for the monochromatic radiation of the laser .
  此材料必须对该激光器的单色辐射敏感。
• Partial radiation pyrometers are sensitive to narrow selective wavebands .
  部分辐射高温计在窄的选择波段上是灵敏的。
• The spectral distribution of a black body radiation is described by planck's .
  黑体辐射的光谱分配由普朗克定律描述。