Objective to establish an animal model for research of orthodontic toothmovement.
目的建立正畸牙移动的实验动物模型。
2
The scroll wrap is the main movement part of compressor, only have the tooth, have no abrasion, thus the life is longer, so this is free maintenance compressor.
涡旋压缩机主要运动件涡盘只有啮合没有磨损,因而寿命更长,被誉为免维修压缩机。
3
Objective To investigate the relation between the skeletal age and the rate of toothmovement.