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1.圓柱體上的三種截交綫截平麵與圓柱麵截交綫的形狀取決於(jue yu)截平麵與圓柱軸綫的相對位置 例2 已知主視圖和左視(zuo shi)圖 求作俯視圖 1 截平麵為平行麵 正交圓柱的相貫綫 相貫體概述 積聚在該烈上 例2 求圓...