Because the ideal “rigid joint” and “hinged joint” are inexistent, the stiffness of any connection types is between ideal rigid joint and hinged joint.
为理想的刚节点和铰接点是不存在的，任何连接形式的刚度都是介于理想刚接和完全铰接
间的。
Because the ideal “rigid joint” and “hinged joint” are inexistent, the stiffness of any connection types is between ideal rigid joint and hinged joint.
为理想的刚节点和铰接点是不存在的，任何连接形式的刚度都是介于理想刚接和完全铰接间的。
By using Taylor's formula, the article deduces the sufficient condition of the existent extreme value and the necessary condition of the inexistent extreme value of trinary function.
通过利用泰勒公式推导出判断三元函数极值存在的充分条件和极值不存在的必要条件。
：以上例
、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
