left loop meaning in English

左环
左袢

This new method is used to solve the five - class fingerprint classification problem in which fingerprints are classified into whorl , left loop , right loop , arch and tented arch and satisfactory results are got hi the experiments
将算法的验证与指纹分类问题的解决相结合，本文将指纹分为斗形、左旋、右旋、弓形、帐形五大类，初步的实验显示出了较好的分类结果。
According to the number and relative position of " core points " and " delta points " extracted from the fingerprint image , we classify the fingerprint into the following six classes : arch , tented arch , left loop , right loop , whorl , twin loop
通过提取出的指纹图像中“核心点”和“三角点”的数目和相对位置，我们将指纹图像分成了六种类型:拱型，尖拱型，左环型，右环型，涡型，双环型。