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。
• The theoretical and calculating models of field emission properties of metal cone and wedge are established.
  建立了金属圆锥和楔形场发射体性能的理论计算模型。
• The influence of the material types on the dynamic friction was studied by the technique of acoustic emission.
  利用声发射技术研究了材料类别对动态摩擦状态的影响。
• Formaldehyde emission testing on wood panel and finished goods;
  木板和成品的甲醛释放测试；
• The fluorine emission characteristics and industrial experiment results of fluorine retention during coal combustion in fluidized bed were reported.
  分析了流化床煤燃烧氟析出特性，并进行了流化床石灰石燃烧固氟试验。
• 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。
• 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。
• 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。
• 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。
• The materials 'best form were conformed by the studies of excitation and emission spectra.
  通过材料的激发和发射光谱研究，确定了材料的最佳组成。