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emission noun uk/iˈmɪʃ.ən/ us/iˈmɪʃ.ən/ C1 [ U ]（气体、热量、光线等的）排放，散发，射出 the act of sending out gas, heat, light, etc. Bioluminescence is the emission of light from living organisms. Excess infrared emission was detected around six of these stars. C1 [ C ]排放物;散发物 an amount of gas, heat, light, etc. that is sent out He uses a night observation device that picks up heat emissions. There is a risk of accidents with large emissions of radioisotopes into the biosphere. 更多例句- We can measure the absorption or emission of light at specific wavelengths.
- Fluctuations in the intensity of the radio emissions from stars allow researchers to infer the amount of ejected material.
- Research is underway to develop ways of measuring the full-body biophoton emissions of human subjects.
- He has concerns about the need to curb emissions of smog-forming nitrogen oxides, sulphur dioxide and mercury.
- Countries and corporations are making efforts to cut their greenhouse gas emissions.
- Vehicles are placed on a treadmill and their emissions are measured when the gas pedal is pushed and the wheels are turning.
- State governors are moving toward regional emissions limits.
- New, tougher emission standards for cars will be brought in.
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