Due to the tremendous difficulties in type synthesis of symmetrical minor-mobility mechanism, there existed no symmetrical 5-dof parallel mechanisms before.
由于具有对称结构的少自由度并联机器人型综合难度极大，目前国内外尚未有对称结构的五自由度并联机器人。
Conclusion Basing on the theory of "Asynchronous Symmetrical Multiple primary", the minor primary lesions of odontogenic keratotic cystoma in other region...
结论利用异时对称多原发性观点可早期诊断颌骨其它不同部位的微小原发性角化囊性瘤病灶。
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