A hand-driven machine gun, the Gatling gun was the first firearm to solve the problems of loading, reliability, and the firing of sustained bursts.
早期的盖特机炮虽然要靠手摇才能开火，但它毕竟是同时解决了装弹、稳定性、连续开火问题的首款火力武器。
2
This paper analyzes the problems and disadvantages of the solving methods of the density adjustment device on the present hand-driven flat knitting machine.
介绍了现有手摇式横机密度调整装置存在的问题和解决方法的不足。
3
He was driven out of a side entrance with his hand covering his face.