单词：emission
[医] 发射, 遗精
n. the release of electrons from parent atoms
n. the occurrence of a flow of water (as from a pipe)
考试类型：[六级/托福]
emission的用法和样例：
例句
- In addition, wetland soils are known for methane emission, a greenhouse gas.此外,湿地散发沼气这种温室气体,是人所共知的。
- The limitless emission of foreign currencies has an serious influence on the country's economy.外汇的无限制发行严重影响了该国的经济。
- New regulations are aimed at reducing the vehicle emission.新规定的目的是要降低汽车尾气的排放。
- Emission of smoke from chimneys is an offense.在这里排放烟雾是违法的事情。
词汇搭配
- emission standard排放标准
- secondary emission二次发射,次级发射...
- positron-emission tomography正电子放射断层造影术...
- emission coefficient发射系数
- fluorine emission含氟发射物
- field emission静电发射,场致发射,...
- back emission反向发射
- emission rate发射速率
- emission spectrum放射光谱,放射谱...
- emission band放射频带,发射谱带...
- stack emission烟囱排放
- exhaust emission废气排放
- emission factor发射因数
- cold emission冷辐射,冷阴极放射...
- stimulated emission受激发射
- heat emission热辐射
- photoelectric emission光电发射
- dust emission粉尘排放
- atmospheric emission大气发射
- emission spectroscopy发射光谱学
经典引文
Experts monitor sea creatures for nuclear emissions.
出自：City Limits
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