j-hook wrinkle 挂钩皱
j-hook poor die-cut 挂钩剪裁不良 ; 挂钩裁剪不良
j-hook damaged 挂钩烂
J-HOOK DELIMITATION 挂钩内层分离
J-hook 挂钩
J-HOOK DAMAGE 挂钩烂
Double J Hook 双J钩
J-hook sticker 挂钩贴
J-hook headgear J形钩
Object To evaluate the effects of class II malocclusion treated with MBT technique with high pull headgear J hook.
目的：评价标准方丝弓配合高位J钩对正畸治疗中牙根吸收的影响。
PURPOSE: The purpose of this study was to evaluate the effect of high pull J hook headgear(HPHG) on root resorption of maxillary incisors during orthodontic treatment.
目的：评价标准方丝弓配合高位J钩对正畸治疗中牙根吸收的影响。
The J-turn and fish-hook rollover test are simulated and the simulation result can expressed the rollover performance and can give some reference to the prototype testing.
对车辆侧翻多种工况进行了仿真研究，仿真结果可以准确的表达真实车辆的侧翻特性，为实车试验提供了参考。
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