躲债 发表于 2025-3-30 08:52:24
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Introduction,progress and general welfare is lacking. The energy consumption per capita in a country is thus an indicator of its state of technical development, exhibiting differences of more than two orders of magnitude between highly industrialised and not yet developed countries.附录 发表于 2025-3-30 23:22:08
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Control of a Separately Excited DC Machine,is discussion is now extended by considering the machine as part of a feedback control system. The reason for this is that in practice the choice of a DC drive is normally motivated by the possibility of operating over a wide speed range with low losses and matching the behaviour of the motor to thecommensurate 发表于 2025-3-31 11:57:38
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