Based on the theory of concrete structure, a new expression was derived for lagged strain of fiber-reinforced polymer(FR......

一种可预紧堵塞器是工程爆破炮眼堵塞技术领域的关键部件，通过分析其预紧自锁功能，可为堵塞结构设计提供指导。......

目的：探讨预装型注入式可折叠人工晶状体手术的临床效果。方法：对80例（96眼）老年性白内障患者行超声乳化白内障摘除联合预状型可折叠人......

The Initial Imperfection Amplified Criterion is applied to investigate the geometric nonlineardynamic buckling of static......