音标:[i'miʃәn] ; 柯林斯词典等级:2 级;
n. 发射, 射出, 发行
[医] 发射, 遗精
n. the act of emitting; causing to flow forth
n. the release of electrons from parent atoms
n. the occurrence of a flow of water (as from a pipe)
词型变化:名词复数形式 : emissions
考试类型:[六级/托福]
词性分布:
名词100%

emission的用法和样例:

例句

用作名词(n.)
  1. 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。
  2. 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。
  3. 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。
  4. 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.

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