以下为句子列表:
英文: Abstract: Expound the component, the principle and the working process ofthe material attenuation measure device, give the attenuation coefficient calculation method.
中文: 文摘:阐述了材料衰减测试系统的组成、原理及工作过程,给出了衰减系数的计算方法。
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英文: Point and spot lighting usually have attenuation coefficients.
中文: 点光源、聚光灯通常具有衰减系数。
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