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通过对常见的几种标准或计算方法进行比较和分析,提出各种阻力系数的合理取值范围以及功率计算中安全系数和备用系数的选取原则。
Through the comparison and analysis of several common standards or calculation methods, the reasonable range of various resistance coefficients and the selection principle of safety factor and reserve factor in power calculation are proposed.