An actuator's function is to provide thrust and positioning in machines used for production or testing. One type is the electromechanical actuator, which converts the torque of an electric rotary ...

For the difference of rock and soil strength on the tunneling face, curved tunneling, and the top-heavy structure of the main machine forming the complex geological structure, the adoption of uniform ...

A New Zealand father who evaded authorities with his 3 children for years is shot dead by the police Thousands Cancel Migration to U.S.: Report US Open record prize money: How much do players earn ...