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本文中提供的一些公式和计算图表与王永初同志的《自动调节系统工程设计》(1983年机械工业出版社)一书中P.384~394的某些公式和提法有所不同,供读者参考。
Some formulas and calculation charts provided in this paper are different from some formulas and references in P.384 ~ 394 of Comrade Wang Yongchu’s “Automatic Control System Engineering Design” (Mechanical Industry Press, 1983), for readers’ reference .