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

• Who conducted the experiment of hydrogen emission spectrum in a magnetic field.
  塞曼做了一个，磁场中的氢原子光谱实验。
• 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。
• A wet dream is also known as a nocturnal emission.
  湿梦也被认为是夜间遗精。
• 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；
• 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。
• 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。
• Application of Acoustic Emission in Earthquake Monitoring System
  声发射在地震监测系统中的应用研究
• It provides a technology basis of theoretic and testing research for the control of vehicle emission.
  为汽车排放污染物控制技术提供了较好的理论和试验研究基础。