专家们经过了许多年的研究和实践，用老式的方法开发出一种叫做敏感知觉雷达系统，当然，还是有些新的一些发现。
Experts develop such sensitive perceptual radar the old-fashioned way, of course, through years of study and practice.
又经过30年的研究和实践，到100岁时，孙思邈写成了《千金翼方》。
And after 30 years of research and practice, to the 100-year-old, Sun Simiao writes gold wing party.
经过多年的研究和实践，积累了降低熟料热耗的经验，证明这些措施是有效的。
Experience about reducing heat consumption of clinker accumulated through research and practice over the years proves effective.
应用推荐