The back board is provided with a pin connected electrically with the ground wire.
背板具有引脚，该引脚与接地线电性连接。
Pin connected main frame, short turning radius, flexible mechanism.
铰接式车架，转弯半径小，机动灵活。
As examples, numerical analyses have been conducted on the cantilever and arch foldable structures as well as the foldable structure pin-connected with three bars.
给出了悬臂和拱形折叠结构及铰接式三杆折叠结构的算例分析。
As examples, numerical analyses have been conducted on the cantilever and arch foldable structures as well as the foldable structure pin-connected with three bars.
给出了悬臂和拱形折叠结构及铰接式三杆折叠结构的算例分析。
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