英音 [i'miʃn] ;
美音 [i'miʃən] ;
名词
1.不可数名词：【文】（光、热、烟、气、分泌物、体液等的）散发，发射，发出
2.可数名词：散发之物、发出之物；流出物；排泄物
the act of emitting; causing to flow forth
any of several bodily processes by which substances go out of the body
the release of electrons from parent atoms
a substance that is emitted or released
the occurrence of a flow of water (as from a pipe)
相似短语positron emission emission computer 正电子发射计算机
cold emission 自动发射，场致发射，冷发射，冷辐射，冷阴极放射
emission band 发射带
emission behavior 排放性能
emission cell 发射光电管，发射式光电元件
emission duration 发射持续时间
emission formation 排气污染物的形成
emission frequency 发射频率
emission level 排放水平，排气污染程度
emission line 发射谱线
相似单词emission n.1.[U]【文】（光、热、烟、气、分泌物、体液等的）散发，发射，发出2.[C]散发之物、发出之物；流出物；排泄物
field emission 【化】 场致发射
low emission 低污染的汽车／发动机)低排放(的
back emission 反向放射
fluorescence emission 荧光发射
re emission 二次发射,二次辐射