There are several types of sights used for small arms. All of them have advantages and disadvantages. A new type of sight-holographic sight-is introduced in the
Through analyzing the kinematics of the hydraulic manipulator operating system, according to the rules for seting up the D-H coordinate system, the generalized
A method is presented to control the vibration of high-speed cannonball transport mechanism due to the reduction of its weight, which adhere a nonlinear Zn-27Al