The technological transformation measures of handfiring platform heat treatment furnace are introduced in this paper. The transformation made smoke and dust eliminated as well as energy saved.
介绍了手烧煤台车式热处理炉的技术改造措施，改造后既解决了消烟除尘问题，又达到了节能的目的。
2
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。
3
PowderMed caught Pfizer's eye because of its nifty helium-powered, hand-held device that delivers vaccines by firing DNA-laced gold particles into the skin.