单词：diffusion radiation
diffusion radiation的用法和样例：
例句
- Some cancers are treated by radiation therapy.有些癌症可用放射疗法治疗。
- And that's without radiation and chemotherapy.其中没有任何的放射和化学治疗。
- Thus the absorption of a system is the fraction of the incident radiation which is absorbed by the system.因而一个系统的吸收率就是被系统吸收的入射辐射的份额。
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