拱形面包
发表于 2025-3-25 03:57:12
Microwave Systems,detector can be interconnected in an E.S.R. spectrometer. Therefore this chapter is devoted to a fairly detailed, quantitative comparison. of the more commonly used arrangements. We shall develop from the method of analysis used in Chapter 2 a simple graphical method for determining the relative res
Irrepressible
发表于 2025-3-25 07:33:24
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abject
发表于 2025-3-25 11:50:45
Superheterodyne Spectrometers,ined by the linewidth of the magnetic resonance. For the majority of samples a value of 100 kc/s is permissible and, as we concluded in §2.7, does not involve too serious a deterioration in the noise figure of the detecting system compared with the noise figure that could be obtained if the choice o
cumulative
发表于 2025-3-25 18:22:04
Automatic Frequency Control Systems,equency of the spectrometer cavity from occurring. These variations degrade the performance of the spectrometer in one way or another, and various automatic frequency control systems have been devised to prevent this from happening.
Fretful
发表于 2025-3-25 21:50:37
Low-Noise Microwave Pre-amplifiers,ifiers. In this connection it is probably worth mentioning first that the technology of microwave crystal mixers is still advancing and that the performance of the conventional point-contact silicon crystal rectifier is already being improved upon. Oxley. has obtained quite promising results with ge
痛苦一下
发表于 2025-3-26 00:47:41
Electronic Circuitry,rticular the general policy of assuming the background of a graduate in electronic engineering will be followed. There is no longer any need for the circuitry to be designed by the scientist engaged in electron-resonance studies. Most spectrometers in use today are built commercially and it is there
Mercurial
发表于 2025-3-26 05:54:15
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Meager
发表于 2025-3-26 10:12:58
,Telling Older People’s Housing Stories,r noise characteristics. The newest type of diode is the Shockley barrier diode, which works in much the same way as a point contact diode in that a metal-to-semiconductor junction is used, but the junction is formed by epitaxial growth and has therefore more stable and more controllable characteristics.
Bernstein-test
发表于 2025-3-26 14:21:06
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合适
发表于 2025-3-26 18:33:47
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