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

• This is the mathematical basis of computed tomography and positron emission tomography.
  这是计算机层析成像和正电子层析成像的数学基础。
• 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。
• Formaldehyde emission testing on wood panel and finished goods;
  木板和成品的甲醛释放测试；
• This emission of heat is completely independent of temperature and pressure.
  这热的散发全然不受温度和压力的影响。
• In cathode ray tube display, the continuation of light emission from phosphor after excitation by the electron beam.
  在阴极射线管显示器中，用电子束激励后荧光物质光发射的持续现象。
• Analyzed the existing problems in CDQ emission control system, detailed the modification process of environmental emission control system.
  分析了干熄焦除尘系统存在的问题，对环境除尘系统的改造过程做了详述。
• 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。
• In-situ field electron emission measurement has been conducted on individual zinc oxide nanowire.
  原位研究了单根氧化锌纳米线的场致电子发射性能。
• Evaluation of uncertainty for measurement of carbon in titanium alloy by spark source atomic emission spectrometry;
  对火焰原子发射光谱法测定碳化钛中微量钠的条件进行了试验。
• 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。