emission有没动词形式?

翻译and sharp emission spectra have been successfully prepared in organic phases,
……and sharp emission spectra have been successfully prepared in organic phases,

挥发性有机化合物在说明时要说它的排放物还是放射性啊?因为在翻译时emission这个词既可以翻译成排放物也可以翻译成放射性,所以谢谢高手指点了.

英语翻译
我查字典,是tail gas,但觉得太口语了.
还有别的回答是exhaust,emission,到底有什麽区别?用哪个好?

英语 according to the modellers,emission cuts won t change the life style provide .
这是什么意思啊! 求解!

Many new cars are designed to ____the amount of emission of eshaust to protect our environment.
A.increase B.reduce C.raise D.refuse

16.Like the visible spectrum,an atomic emission spectrum is a continuous
range of colors.
17.Each element has a unique atomic emission spectrum.
18.A flame test can be used to identify the presence of certain elements in
a compound.
19.The fact that only certain colors appear in an element’s atomic emission
spectrum indicates that only certain frequencies of light are emitted.
20.Atomic emission spectra can be explained by the wave model of light.
21.The neon atoms in a neon sign emit their characteristic color of light as
they absorb energy.
22.When an atom emits light,photons having certain specific energies are
being emitted.
判断正误

题目是这样的：If we assume that the sun's emission rate is 3.9E-26W and that all of its light has a single wavelength of 550nm,at what rate does it emit photons?麻烦用中文或者英语写清楚公式,

任务型阅读 China need to 填空 to cut carbon dioxide emission
英语任务型阅读中的一道题目,在填空的位置填入适当的词组!
在线等!

Radioactive(放射性的) pollution can be said to be the emission(排放) of radioactive substance into air, water or land due to human activities in the form of radioactive waste. Radioactive waste is usually the product of nuclear fission(核裂变), which is widely used in nuclear power stations and nuclear weapons. The radioactivity of nuclear waste decreases with time. That means the waste needs to be separated from the reach of living beings until it no longer causes a threat to living beings. This time period may take from days to months and to years depending upon the radioactive nature of the waste. Radioactive pollution that is spread through the earth’s atmosphere is called ‘fallout’. Nuclear pollution began to attract people’s attention during the World War II period when the United States, Britain and the Soviet Union started conducing nuclear tests. The best example of fallout is the nuclear bomb attack on Hiroshima and Nagasaki, Japan in 1945 by the United States of America during World War II. As a result of the bomb attack, nearly 225,000 people died within 5 years of the attack due to the radiation effects and cancer. In land and water, the major source of radioactive pollution remains with the nuclear fuel cycle(核燃料循环). The nuclear fuel cycle is used in nuclear power stations and extraction(提炼) of materials from nuclear substance, where the pollutants are left behind after the useful material has been extracted. The effects of radioactive pollution were first reported in the early 20 th century when people working in uranium mines(铀矿井) suffered from skin burn and cancer. The effects vary from one individual to another. Exposed to radioactive radiations for a long time, living beings may suffer from the damage to the DNA cells, which results in cancer, genetic defects for the generations to come and even death. In a word, since every coin has its two sides, it’s a good idea to prevent from its disadvantages while making full use of its advantages. Title Radioactive Pollution and Its Effects 小题1: of radioactive pollution * It is the emission of radioactive substance. * Its waste is the product of nuclear fission. The decrease of the radioactivity * It decreases as time 小题2: by. * The waste needs to be 小题3: from living beings until it no longer does 小题4: to living beings. * The time period of the decrease小题5: on the radioactive nature of the waste. The 小题6: of radioactive pollution * In 1945, the nuclear bomb attack caused 225,000 小题7: . * In the early 20th, the miners suffered from skin burn and cancer and the effects are 小题8: . * A long 小题9: to radioactive radiations can damage the DNA cells. Conclusion * We should小题10: its disadvantages and make full use of its advantages.

英语翻译
2.Background
2.1.Acoustics emission (AE)
AE is defined as transient elastic waves generated due to a rapid release of strain energy caused by structural
alteration in/on a solid material under mechanical or thermal stresses.Primary sources of AE are crack
initiation,crack propagation,plastic deformation and friction.AE was originally developed as a method of
NDT where it was used to monitor crack initiation,propagation and location.Attempts to apply this
technique to condition monitoring of rotating machinery started in the late 1960s [16].In the application to
rotating machinery monitoring,AE are defined as elastic waves generated by the interaction of two media in
relative motion.Sources of AE in rotating machinery include impacting,cyclic fatigue,friction,turbulence,
material loss,cavitation,leakage,etc.For instance,the interaction of surface asperities and impingement of
the bearing rollers over a defect on an outer race will result in the generation of AE.These emissions
propagate on the surface of the material as Rayleigh waves and the displacement of these waves is measured
with an AE sensor.
Some of the principal advantages of AE include:
(a) As AE is non-directional,one AE sensor is sufficient to perform the task compared to other techniques
such as vibration monitoring which can require information from three axes.
(b) Since AE is produced at microscopic level it is highly sensitive and offers opportunities for identifying
defects at an earlier stage when compared to other condition monitoring techniques.A typical example is
the proven ability [3] to detect the earliest stages of bearing degradation.
(c) As AE only detects high-frequency elastic waves,it is insensitive to structural resonances and typical
mechanical background noise (o20 kHz).
However,the main concern on application of the AE technique is the attenuation of the signal during
propagation and as such the AE sensor has to be as close to its source as possible.This limitation may pose a
practical constraint when applying this technique to certain rotating machinery.

英语翻译
求翻译,The fluorescent emission is measured at right angles to the incident beam中right angle是不是指正对的角度?

SPIE论文下载求助~
Monitor the microwave thermal emission anomaly around the Yushu earthquake fault zone by using AMSR-E data 这这篇文章~应助者请将文章发至lxjing327@sohu.com

英语翻译
1、Effect of compression ratio on combustion and emission characteristics of a direct-injection natural gas engine
2、Experimental investigation of prechamber autoignition in a natural gas engine for cogeneration
3、Improving the efficiency of the advanced injection low pilot ignited natural gas engine using organic rankine cycles

英语翻译
Emission of green house gases from various domestic and industrial sources is one of the major contributors towards global warming and climatic changes.This has significant and at-times irreversible effect on the environment.Many methodologies have been developed
to sequester carbon dioxide.Apart from the natural sequestration,carbon dioxide can be sequestered artificially by absorption into amine-based solvents,gas separation membranes and cryogenics as mentioned by National Energy Technology Laboratory (NETL),Department of Energy of United States (USDOE) (NETL USDOE,2005).However,implementing these technologies may be costly.It will be most desirable if carbon dioxide,which is considered as awaste,can be used for producing products to generate revenue in a cost-effective way.
Development of industrial ecosystems is one of the most popular methods being implemented in the industrial world for recycle,reuse and resource conservation (Garner and Keoleian,1995).In an industrial ecosystem,several industries are interconnected through
mass and energy streams for mutual benefit (Ehrenfeld,2004).It converts the industrial process from a linear process to a cyclic process where the waste generated by one industry can be used as a resource by another industry (Lou et al.,2004; Sikdar,2003).

英语翻译
Speciated VOC emission profiles show that the use of oxygenated gasoline resulted in higher MTBE (methyl tert-butyl ether) and lower aromatic hydrocarb on emissions,higher isobutene,and lower aromatic aldehydes.
Speciated 既然高人都不知，可能是文章印错了吧！

that在这种情况下能省略吗?
The Chinese greenhouse gas emission list use this IAP-N model to estimate farmland N2O emission in 1994 is 474 Gg.
请问estimate后面应该加that吗?

请问这句话怎么翻译啊?low-carbon emission,as the core part of low-carbon development,could be in absolute or relative term,depending on the development stage and reduction obligation谢谢大家了!