knife-edge support

... knife-edge contact 刀形触点闸刀式开关 ; 刀形触点 knife-edge support 刀形指针 Knife-Edge Crossing 刀锋式飞越 ...

 knife-shaped needle

... knife-edge 刀口刀形边缘 knife-shaped needle 刀形指针 knife-shaped pointer 刀形指针 ...

 knife-shaped pointer

... knife-shaped needle 刀形指针 knife-shaped pointer 刀形指针 knight head 船首副肋材 ...