This paper introduces the welding principle, design idea and key techniques of a miniature sealed source welding machine, which will realize fully automatic welding of miniature sealedsources.
文章介绍了微型密封源焊接机的焊接原理、设计思路及其关键技术，实现了微型密封源的全自动化焊接。
2
Sources said a meeting in Mexico in December 2010 would be more likely to see the legal treaty sealed.
有消息说，也许2010年12月的墨西哥会议更有可能看到这项法律条约的签署。
3
Carbon nanospheres were synthesized by an inorganic chemical reaction with calcium carbide and chloroform as carbon sources in a sealed autoclave.