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- They give off discrete amounts of radiant energy. 它们放出不连续的辐射能量。
- We know that light is a variety of radiant energy. 我们知道光是一种辐射能。
- A beam of radiant energy in the form of a narrow cone or cylinder. 光线锥窄圆锥体或圆柱形的辐射性光束。
- The fraction of radiant energy that passes through a substance. 通过某种物质的辐射能因子。
- The amount of radiant energy needed to expose a photographic film. 曝光量感光胶片上曝光所需的辐射能的总量
- quantity of radiant energy 辐射能量
- Also the key factors effecting light color fastness measurment such as radiant energy, quantity of heat, humidity and time are anatomized. 深入剖析了影响耐光色牢度测试的关键因素,包括辐射能、热量、湿度和时间。
- We have come to appreciate fundamental similarities between all of the various forms of radiant energy and matter. 我们已经开始意识到了各种形式的辐射能和物质之间的基本的相似性。
- Different kinds of radiant energy have certain fundamental characteristics in common. 不同种类的辐射能却有着某种共同的基本特性。
- Different kinds of radiant energy,such as light,X rays,and radio waves,seem very different from each other. 各种辐射能，例如光，X射线以及无线电波，彼此很不相同。
- Like other varieties of radiant energy,light radiates,that is,it spreads out from its source in straight lines. 光像其他辐射能一样辐射，就是说它从光源以直线的方式向外传播。
- The capture of radiant energy by plant pigments. About 80% of the visible light falling on a leaf is absorbed, and about 10% of the infrared radiation. 2通过植物色素捕获辐射的能量。大约80%25照射在叶子上的可见光被吸收，10%25是红外光。
- Other forms of radiant energy familiar to us are radio waves, infrared rays, ultra-violet rays,X rays,and gamma rays. 我们熟悉的另外一些形式的辐射能是电磁波，红外线、紫外线、X射线和伽玛射线。
- Different kinds of radiant energy, such as light, X rays, and radio waves, seem very different from each other. 各种辐射能，例如光，X射线以及无线电波，彼此很不相同。
- Other forms of radiant energy familiar to us are radio waves,infrared rays,ultra-violet rays,X rays,and gamma rays. 我们熟悉的另外一些形式的辐射能是电磁波，红外线、紫外线、X射线和伽玛射线。
- A quantity of unknown numerical value. 未知数数值不明的一个数量
- Our most important source of radiant energy is, of course, the sun. Without it there would be no life, for plant life depends upon radiant energy-and we depend upon plant life. 当然，我们人类最重要的光能的来源就是太阳。没有太阳，就没有生命，植物的生命依赖辐射能，而我们依赖植物的生命。
- The factory turns out a large quantity of paper products. 这家工厂生产大量的纸制品。
- Can you make us a special offer based on a quantity of ... ? 以。。。数量为基础，贵公司能给特价吗？
- Immeasurable quantity of natural resource was lost forever through misuse. 无法估量的自然资源因被滥用而永远丧失了。
