We can then look at uranium 238 which has a relatively low absorption thermal energy range and essentially has no fission cross section which is why we call uranium 238 a fertile atom.
我们能看看铀238,它有一个,相对低的吸收热能范围,基本上没有裂变横截面,那就是为什么我们称铀238为可转换核素。
The weapon operator search and locate the target using a periscope optical sight (7km range) in day light, or a thermal imager at night or in bad weather conditions.
武器操作员在白天亮光下使用一个潜望镜白光瞄准镜(7公里范围)或在不良天气条件或夜间使用热成像去搜寻和定位目标。
The application of the model can improve the control accuracy of radiant floor heating system, and control indoor temperature within a given range, thus ensure indoor thermal comfortableness.
预测控制模型的应用可提高对地板辐射供暖系统的控制精度,使室内温度控制在设定范围内,保证了室内的热舒适性。
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