名詞 emission:

1. the act of emitting; causing to flow forth
   同義詞：emanation
2. a substance that is emitted or released
   同義詞：discharge
3. the release of electrons from parent atoms
4. any of several bodily processes by which substances go out of the body
   同義詞：discharge, expelling
5. the occurrence of a flow of water (as from a pipe)

1. An electrode used in certain electron tubes to provide secondary emission.
   中間極，二次發(fā)射電極一種用于一定電子管作第二次發(fā)射電極
2. Emission of visible light by living organisms such as the firefly and various fish, fungi, and bacteria.
   生物發(fā)光生物體的可見光發(fā)射，如螢火蟲、彩色魚類、真菌類和細(xì)菌
3. In cathode ray tube display, the continuation of light emission from phosphor after excitation by the electron beam.
   在陰極射線管顯示器中，用電子束激勵(lì)后熒光物質(zhì)光發(fā)射的持續(xù)現(xiàn)象。
4. Emission and propagation of energy in the form of rays or waves.
   發(fā)射以光線或波的形式發(fā)出和傳播能量

e.mis.sion

n.（名詞）
The act or an instance of emitting.
發(fā)射：發(fā)射的行為或情形
Something emitted.
發(fā)射物
A substance discharged into the air, especially by an internal combustion engine.
被發(fā)射物：被拋射到空中的物體，尤指用內(nèi)燃機(jī)

來源：
Latin ômissiô ômissiôn- [a sending out]
拉丁語 ômissiô ômissiôn- [發(fā)出]
from ômissus [past participle of] ômittere [to send out] * see emit
源自 ômissus [] ômittere的過去分詞 [發(fā)出] *參見 emit