辐射指的是能量以电磁波或粒子（如阿尔法粒子、贝塔粒子等）的形式向外扩散。自然界中的一切物体，只要温度在绝对温度零度以上，都以电磁波和粒子的形式时刻不停地向外传送热量，这种传送能量的方式被称为辐射。辐射之能量从辐射源向外所有方向直线放射。物体通过辐射所放出的能量，称为辐射能。辐射按伦琴/小时(R)计算。辐射有一个重要特点，就是它是“对等的”。不论物体（气体）温度高低都向外辐射，甲物体可以向乙物体辐射，同时乙也可向甲辐射。一般普遍将这个名词用在电离辐射。辐射本身是中性词，但某些物质的辐射可能会带来危害。
Radiation refers to the outward diffusion of energy in the form of electromagnetic waves or particles (such as alpha particles, beta particles, etc.). All objects in nature, as long as their temperature is above absolute zero, constantly transmit heat to the outside in the form of electromagnetic waves and particles. This way of transmitting energy is called radiation. The energy of radiation radiates in all directions in a straight line from the radiation source. The energy released by an object through radiation is called radiation energy. Radiation is calculated in Roentgen per hour (R). Radiation has an important characteristic that it is "equivalent". Regardless of the temperature of the object (gas), it radiates outward. Object A can radiate towards object B, while object B can also radiate towards object A. This term is generally used for ionizing radiation. Radiation itself is a neutral term, but radiation from certain substances may cause harm.
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辐射剂量率仪
Radiation dose rate meter
LT-Ⅲ型 χγ辐射剂量率仪
LT - III type χγ Radiation dose rate meter
LT-Ⅲ型 χγ辐射剂量率仪LT-Ⅲ型 χγ辐射剂量率仪是以内置高灵敏度GM计数管为探测器，LT-III辐射检测仪也叫辐射巡测仪，它可以按照预先设定的地址编码和剂量历史时间
LT - III type χγ Radiation Dose Rate Instrument LT-III χγ The radiation dose rate meter is equipped with a built-in high-sensitivity GM counter tube as the detector, and the LT-III radiation detector, also known as the radiation patrol meter, can be programmed according to pre-set address codes and dose history time