openadj.开着的；开放的；公开的v.打开；张开；展开；摊开；开始(某事物)；开张；营业；以…开头；宣布启用n.户外；公开open out打开； 开发； 展现

1. In the light of characteristics of blasting operation in shallow sea, a steel open caisson with complicated structure was quickly demolished by use of varied blasting technologies.
   结合滩海环境下爆破作业的特点，综合几种爆破技术快速拆除了结构复杂的钢沉井。