persistence
发表于 2025-3-28 17:43:01
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Obvious
发表于 2025-3-28 21:38:48
Jos D. M. Platenkamp,Almut Schneiderd the like is discussed in Chapter 13 ; the present chapter deals mainly with the principles, construction and application of instruments commonly used in the measurement of voltage, current and resistance. By far the most common and important meter movement relevant to these measurements is the moving-coil meter.
Conquest
发表于 2025-3-29 02:50:47
Connor Struggles to Stay in Schoolemperature. During operation, once the anode voltage has exceeded the ionization potential of the gas, very large amounts of current can be conducted by the tube. The current consists of the primary electrons from the cathode together with the considerable number of secondary electrons and positive ions present in the ionized gas.
ingenue
发表于 2025-3-29 05:46:06
Modeling and Control of HVDC Systems,st therefore be provided between the transducer and indicator to effect the necessary amplification. The design of a suitable amplifier depends upon the transducer and indicator used, upon the power required and upon the frequency of the signal that must be amplified.
听觉
发表于 2025-3-29 09:58:51
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血友病
发表于 2025-3-29 13:18:26
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SOBER
发表于 2025-3-29 18:39:31
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overreach
发表于 2025-3-29 23:41:00
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你敢命令
发表于 2025-3-30 01:57:07
Howard Kunreuther,M. V. Rajeev Gowdah electron carries a small negative charge (1•602×10–. coulombs) and when many millions of them flow along a wire a charge . will pass a particular point during a specified interval of time. If a small charge, ., passes a point in a small interval of time, ., then . is the rate at which charge is passing. This rate is called electric current, i.e.
Cardioversion
发表于 2025-3-30 04:49:40
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