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

• The availability of new passenger cars each year depends on whether car makers successfully complete an emission certification process.
  每年新车是否可用，取决于汽车制造者是否成功地完成排放物鉴定程序。
• 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。
• 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 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；
• A wet dream is also known as a nocturnal emission.
  湿梦也被认为是夜间遗精。
• 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。
• Based on the advantages and shortages of EMD, it is the first time to use this method to Acoustic Emission Testing.
  在分析了EMD方法的优点和不足的基础上，首次提出将该方法应用于声发射检测中。
• 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。
• 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。