The public demonstration of the JB-10 clearly showed the jetpack giving its passenger a smooth takeoff and landing.
10的公开演示清楚地显示了喷气背包如何让乘客平稳起飞和降落。
Not, as you might expect, the first public demonstration of the Macintosh (which happened in January 1984), but something far older and far more important.
这可不是你想到的那个：Macintosh的第一次公演(1984年1月)，而是那个历史更久远，意义也更重大的一次演示。
Sir Joseph Swan of Newcastle announced that he had made a working light bulb on 18 December 1878 and on 18 January 1879 he gave a public demonstration in Sunderland –10 months before Edison.
英国纽卡斯尔的约瑟夫-斯旺爵士说，他在1878年的12月18日就已经发明了一个可以使用的电灯泡了，并且在1879年的1月18日拿到英国桑德兰市做过公开展出，足足比爱迪生早了10个月。
This thesis makes use of method of demonstration and comparison, and method of analyzing cases, and tries to analyze systematically the problems existing in the supplies of rural public goods.
本文采用实证分析法和比较分析法相结合的方法，结合案例分析，拟对农村公共物品供给中的需求表达进行全面、系统的论述。
This is the world's first example of a community-oriented hydrogen distribution demonstration project, covering not only residential houses but also commercial and public facilities.
这是世界上第一个面向社区的氢分布式示范项目，不仅覆盖了居民住宅，还包括商业和公共设施。
Theoretically, the research of service by public stays on the technical and piecemeal demonstration level, and the achievement is little.
理论上，对公告送达的研究大多停留在零星的技术阐述层面，且成果不多。
Theoretically, the research of service by public stays on the technical and piecemeal demonstration level, and the achievement is little.
理论上，对公告送达的研究大多停留在零星的技术阐述层面，且成果不多。
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