信条
发表于 2025-3-30 12:11:02
http://reply.papertrans.cn/47/4658/465765/465765_51.png
索赔
发表于 2025-3-30 12:47:36
http://reply.papertrans.cn/47/4658/465765/465765_52.png
预防注射
发表于 2025-3-30 20:16:53
Frequency Domain Representation of Signals,rts or spots’. Most subjects become easier with use, of course, but this is particularly true of Fourier Theory. It is very difficult to find an examination question that someone well versed in the subject cannot do in less than about ten minutes; indeed, this is probably the best academic reason for not teaching it!
Canyon
发表于 2025-3-30 22:32:11
Sampling Theory,ssed by a computer, an ‘instantaneous’ value of the signal must be digitised (fed to an analogue-to-digital convertor or ADC), the required processing carried out, and an analogue value produced at the output via a digital-to-analogue convertor or DAC.