n.
放射,輻射; 發射; 發光
放射物; 輻射線[能]
散射器
生輻射形;測射出測量法;醫射線療法
語義擴展; 語義推演
irradiation
n.
放射,照射
闡明,啟發; 啟迪
物光滲; 光線; 輻照[射]
醫照射
擴散
這樣看不出來什麽區別吧?
其實通俗壹點講 雖然兩詞都有照射的意思 但是radiation是 "主動"的發出照射的壹方,而irradiation強調 "被動"被照射的物體,那個被照射的也可以說是 have been irradiated.
Radiation is emitted from something and travels from its point of origin to somewhere else.
When radiation hits something else (and is therefore stopped) the thing that has been hit is said to have been irradiated.
舉個例子
A sunbather is undergoing irradiation by radiation emitted by the sun.