Due to the tremendous difficulties in type synthesis of symmetricalminor-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。
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Conclusion Basing on the theory of "Asynchronous Symmetrical Multiple primary", the minor primary lesions of odontogenic keratotic cystoma in other region...