A vast tract of land is ready for development...一大片广阔的土地可待开发。Objective : To investigate myocardial injury and its mechanism after biliary tract obstruction.目的: 观察胆道梗阻后心肌损伤情况并探讨其损伤机制.She produced a feminist tract, 'C...
这些结构通常是斜交的,而横隔板则垂直于纵梁布置.These structures were usually skewed with the diaphragms placed perpendicular to the longitudinal girders.斜交桥由相互斜交的主梁、梁及桥面板组成,结构受力复杂.Obique bridge is made up of main girder crossbeam and bridge fl...
Microscopically the ores are medium grained to amorphous.显微镜下,矿石为中粒至非晶质.Iron ores of greatest economic interest contain magnetite and hematite.最具有经济价值的铁矿包括磁铁矿和赤铁矿.Ores are also being obtained in quantity from other count...