环形交叉口 meaning in Chinese

circus
gyratory junction

Capacity of roundabout based on probability theory in city
基于数理统计方法的城市道路环形交叉口通行能力研究
Abstract : in this paper vehicle - operating characteristics at a roundabout are discussed , and the vehicle noise composition is analysed . then th e calculating formula of vehicle noise at a roundabout is deduced , which is based on the vehicle noise experimental model at the road sections
文摘:讨论了环形交叉口车辆运行特性，对车辆噪声的各个组成部分进行了分析，推导出基于路段车辆噪声预测实验模型的环形交叉口车辆噪声的经验计算公式