Mixed combined mechanisms r A mechanism system formed through more than one combination pattern is called mixed combined mechanism 自由度大于1的差动机构称为组合机构的基础机构 自由度为1的基本机构称为组合机构的附加机构 所谓封闭式传动机构,是指用一个机构去约束或影 响另一个多自由度机构所形成的封闭式传动系统Mixed Combined Mechanisms A mechanism system formed through more than one combination pattern is called mixed combined mechanism. 自由度大于1的差动机构称为组合机构的基础机构； 自由度为1的基本机构称为组合机构的附加机构。 所谓封闭式传动机构，是指用一个机构去约束或影 响另一个多自由度机构所形成的封闭式传动系统