恒齿通常在4到6岁左右开始长，这时更应引起注意的。
The bigger concern is permanent teeth, which usually start coming in around age 4 to 6.
运用扫描电子显微镜，对4枚禄丰古猿牙齿（恒齿）的釉质结构进行了观察研究。
The enamel microstructure of 4 permanent teeth of Lufengpithecus lufengensis was observed with SEM.
运用扫描电子显微镜，对4枚禄丰古猿牙齿（恒齿）的釉质结构进行了观察研究。
The enamel microstructure of 4 permanent teeth of Lufengpithecus lufengensis was observed with SEM.
应用推荐