Radiation energy absorbability (REA) is a quantity similar to Linear energy Transfer (LET) to study the safety of spacecraft in the radiation environment of space.
辐射能量吸收率(REA)是一个与线性能量传输(LET)类似的物理量，可用于研究航天器在空间辐射环境中的安全问题。
Our environment is filled with many forms of radiant energy which make life possible. Radiation from the sun provides us with heat, light, and food.
我们的环境充满使生活成为可能的多种形式的辐射能。太阳辐射提供光、热和食物。
The paper introduces in detail the characteristics of environment protection and energy saving for floor radiation heat supply system.
本文详细地介绍了地板辐射采暖的环保节能特点，并通过工程实例介绍了地板辐射采暖的设计内容。
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