我们在计算双折角曲线时,常苦于计算繁杂,效率不高。四川省设计院胡昨非同志曾创造了“虚交点计算盘”,因限于精度,无法广泛地应用。因此,我们再度摸索,终于取得了下述方法,特介绍出来,供公路测设 When we calculate the double-bend angle curve, we often suffer from complicated calculation and inefficient. Hu Design Institute, Sichuan Province, non-Comrade Hu has created a “virtual intersection point calculation disk”, due to limited accuracy, can not be widely used. Therefore, we groping again, and finally made the following method, introduced specifically for road measurement