英语翻译Federal emissions,Compensated,Unit injection,Air to air charge cooling,Water to air charge cooling

英语翻译sharp emission spectra光谱方面的~ federal withholding federal loans Federal Probation exhaust emission是什么意思 vehicle emission是什么意思? emission sectors什么意思 radiation emission是什么意思 emission什么意思 chemical emission是什么意思 emission reduction是什么意思 radiated emission是什么意思 spontaneous emission是什么意思 emission microchamber是什么意思 emission behavior是什么意思 spurious emission是什么意思 emission-free是什么意思? 英语翻译First-principles density-functional investigation of the effect of water on the field emission of carbon nanotubes.