radiation
n
1 [U]
(a) (the sending out of) heat, energy, etc in the form of rays (熱、 能等的)放射; 輻射的熱、 能等
a combination of radiation and convection, eg in a gas fire 輻射和對流的結合(如在煤氣爐中).
(b) (the sending out of) rays and atomic particles from radioactive substances (自放射性物質中放射出的)射線和原子粒子; 放射; 放射現象
a low/high level of radiation 低[高]強度輻射
[attrib 作定語]
Some cancers are treated by radiation therapy. 有些癌癥可用放射療法治療.
2 [C] thing that is radiated, esp radioactive particles 放射物; (尤指)放射性微粒, 放射線
radiations emitted by an X-ray machine X射線機放射出來的放射線.