... 苗高 seedling height 根系长度和根幅 root length and width 苗木新根生长数量 total number of new roots ...
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Objective: Statistical analysis of mandibular molar mesiodistal crown width and tooth length and development of root.
目的：统计分析下颌第一、第二、第三磨牙牙冠近远中宽度、牙体长度、分根情况以及相关因素。
The Tooth Length, Crown Length, Root Length, Cervix Width, Cervix Thickness, Crown Width and Crown Thickness were measured with a vernier caliper.
用游标卡尺分别测量牙长、冠长、根长、颈宽、颈厚、冠宽和冠厚；
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