emission

英 [iˈmɪʃn]

美 [iˈmɪʃn]

n.  (光、热、气等的)发出，射出，排放; 排放物; 散发物

复数：emissions　

CET6TOEFLIELTSTEM8医学

Collins.2 / BNC.3483 / COCA.2915

牛津词典

noun

• （光、热、气等的）发出，射出，排放
  the production or sending out of light, heat, gas, etc.
  1. the emission of carbon dioxide into the atmosphere
     向大气排放二氧化碳
  2. emission controls
     排放控制
• 排放物；散发物
  gas, etc. that is sent out into the air
  1. The government has pledged to clean up industrial emissions.
     政府已保证要清除工业排放物。

柯林斯词典

• N-VAR 散发;释放;放射
  Anemission ofsomething such as gas or radiation is the release of it into the atmosphere.
  1. The emission of gases such as carbon dioxide should be stabilised at their present level...
     二氧化碳等气体的排放应该稳定在当前水平。
  2. Sulfur emissions from steel mills become acid rain.
     炼钢厂排放出的硫形成了酸雨。

英英释义

noun

• the act of emitting
  Synonym:emanation
• the occurrence of a flow of water (as from a pipe)
• any of several bodily processes by which substances go out of the body
  1. the discharge of pus
  Synonym:dischargeexpelling
• the release of electrons from parent atoms
• a substance that is emitted or released
  Synonym:discharge

双语例句

• In the spark-ignition engine, recirculating some of the exhaust gas reduces the emission of nitrogen oxides.
  在火花点火的发动机中，再循环的一部分废气减少了氧化氮的有害污染物。
• Its fluorescent emission spectra were measured and the main transition channel were recognized clearly.
  测量了它的荧光发射谱，搞清了它的主要跃迁通道。
• Formaldehyde emission testing on wood panel and finished goods;
  木板和成品的甲醛释放测试；
• The effects of external cavity feedback on the threshold gain and emission linewidth are discussed theoretically;
  理论上分析了外腔的引入对激光器的阈值增益和光谱线宽的影响；
• The emission of gases such as carbon dioxide should be stabilised at their present level
  二氧化碳等气体的排放应该稳定在当前水平。
• Effects of EGR and Cooled EGR on Combustion and Emission of a Diesel Engine
  EGR和冷EGR对柴油机燃烧和排放的影响
• Waste ( methane emission) management and construction of energy efficient housing;
  废料（甲烷排放）管理和节能房屋的建设；
• The point of airport environmental regulation is the pollution of noise and emission.
  摘要机场环境管制的重点是噪声和排放物污染。
• Sulfur emissions from steel mills become acid rain.
  炼钢厂排放出的硫形成了酸雨。
• A high beam energy is also used to stimulate X-ray emission of higher-energy peaks.
  高能量电子束也能用来激发高能量x射线峰的发射。