n.内曲；弯曲；内曲球
v.使内曲；使弯曲
Class 3 Regular Incurve : The florets smoothly incurve and form a ball. 第三型规则内曲型：小花平顺地向内曲成球形。
Class 1 Irregular Incurve : The florets (petals) loosely incurve and make fully closed centers. Lower florets skirted-like. 第一型不规则内曲型：小花松散内曲形成完全密闭之中心，下方的小花有裙摆之效果。
Class 4 Decorative : The upper florets tend to incurve, lower petals generally reflex. 第四型勋章型：上方的小花向内曲，而下方小花常反折。
Class 5 Intermediate Incurve : This bloom with shorter florets, only partially incurving with full centers, but giving a more open appearance. 第五型中度内曲型：头花之小花较短，仅部分内曲成中心，外观较为松散。
200mm Process minimum incurve radius: 150; 加工最小内弯半径：150;
