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本刊1979年第三期曾刊载了一篇“应用‘弯角面积函数’计算滑片式风马达”的文章,文中只列出了ф°=1°～180°的函数值f_5(ф),为读者使用方便,现列出ф°=181°～360°的函数值f_5(ф)如下表。
In the 3rd issue of 1979, we published an article “Applying the function of the angular area to calculate the sliding-plate wind motor”. The article only lists the function value f_5 (ф) of ф°=1° to 180°. For the convenience of the reader, the function value f_5 (ф) of ф°=181° to 360° is listed below.