In the emergency case of a turbine, the electric or hydraulic signal will quickly open the fast closing oil circuit so that the valve plate will be quickly closed by the mechanical drive under the action of spring or pressurized oil in 0.3-0.9 seconds. 当汽轮机出现紧急情况时,通过电信号或液压信号将快关油路打开,在弹簧或压力油的作用下,机械传动机构带动阀板快速关闭,关闭时间为0.3~0.9s。
In the light of the view of "Opening and Closing", in combination with the plate boundary tectonics and the intraplate tectonics, the essential pattern of the plate tectonics of China is summarized in three stages: the Pre-Sinian, the Paleozoic, and the Mesozoic-Cenozoic. 本文根据开合观点,将板缘构造与板内构造结合起来,按前震旦纪、古生代和中新生代三个阶段总结了中国板块构造的基本格局。
The formation of the Middle Jurassic-middle Early Cretaceous thrust nappe system in western Liaoning was related to the final closing of the Mongolian-Okhotsk Ocean between the Siberian and North China plates and plate collision and westward subduction of the Paleo-Pacific plate beneath the East Asian continent. 中侏罗世早白垩世中期形成的辽西地区道冲推覆构造系既与西伯利亚板块与华北板块之间蒙古鄂霍茨克大洋最终闭合碰撞有关,同时也与古太平洋板块向西俯冲在东亚大陆之下有关。
The closing of South Qinling Ocean and collision between the Middle Qinling microplate and South China plate are also oblique, and migrated from east to west. 南秦岭洋盆的闭合是秦岭微板块和扬子板块的斜向碰撞形成的,具闭合不碰撞和碰撞不造山的特征,闭合和碰撞由东向西。
Closing of Tethys and continuous compressing and squeezing of Indian plate were the tectonic dynamics background for the formation of foreland basins in western China. 特提斯洋关闭和印度板块持续推挤是中国西部前陆盆地形成的构造动力学背景。