Welcome to my channel Mr Sagoo where you will learn how to make hand made crafts, presents, toys,life hack, The main thing is ...

Abstract: Aiming at the problems that the push rod mechanism of a lightweight red date pitting machine adopts a planar crank slider mechanism, which is easy to jam, and the transmission accuracy of ...

Charles Babbage is widely recognized for inventing the first mechanical computer, the Difference Engine, in 1821. However, he ...