The desilting and warping work on certain sections of the Yellow River is very important.黄河河段的放淤、清淤工作十分重要.This paper summaries the function and benefits of Yellow River dyke strengthening by desilting.概述黄河放淤固堤的作用及效益评价.Th...
The invention discloses a sediment desilting method of turbulent flow and flood hyperconcentration and application thereof.本发明公开了一种稀性泥石流和高含沙洪水的泥沙拦淤方法及其应用.This paper summaries the function and benefits of Yellow River dyk...
在报纸印刷以前,过去是用手工排铅字的.We arranged lead letters by hand before a newspaper was printed.排字''.'工'.''把书面材料排成铅字的人;排字工人或印刷''.'工'. ''.One that sets written material into ...
Capstan imagesetter of laser sources stay, the exposure light deflection rotation by galvanometric or Prism � � s.绞盘式照排机的激平平源变不静不不静, 曝平平线的偏不停靠振镜或棱镜不静弹来达成.Capstan imagesetter of laser sources stay, the exposure light rota...
在从细菌到有袋类动物的许许多多有机体中,已经发现光致反应系统.Photoreactivation systems have been found in many organisms from bacteria to marsupials.袋熊、袋鼠都是澳大利亚的有袋类动物.The wombat and kangaroo are both marsupials in Australia.接受了墨尔本动物园的外科手术,这个受伤的有袋类动物有...