transplantation
发表于 2025-3-30 09:19:44
Induction motors,otors running from the 240V supply are among the commonest in domestic use. All induction motors are cheap, reliable, rugged, lightweight and reasonably efficient; in fact large (> 1 MW) induction motors have efficiencies of up to 98%. Their biggest drawback hitherto has been their small range of op
Grasping
发表于 2025-3-30 14:34:46
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adj忧郁的
发表于 2025-3-30 16:38:42
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critique
发表于 2025-3-30 22:59:47
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听写
发表于 2025-3-31 02:41:59
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行为
发表于 2025-3-31 05:52:16
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挑剔小责
发表于 2025-3-31 11:32:55
Bipolar junction transistors, prone to break down as the tubes failed, though ingenious methods were devised to minimise the stoppages. But it was not only high-technology products like computers which suffered from valve technology; radios for example were large and clumsy, and batteries for ‘portable’ radios were enormous, he
彻底明白
发表于 2025-3-31 14:08:31
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CAPE
发表于 2025-3-31 19:54:30
Johanna Alkan Olsson,Lotta Anderssonnts. However, nearly all electricity is generated and consumed in the form of AC. In order to continue to use the methods devised originally for DC circuits, Heaviside. developed the use of complex numbers for currents, voltages and impedances. This has proved to be the most powerful tool ever put i
Ballad
发表于 2025-4-1 00:48:06
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