短语词组短语main sleeve -frame self-lifting scaffold 主套架式升降脚手架goliah main -frame 立安主机main frame -based HIS 基于主框架的医院信息系统main building with frame -bent 混合结构主厂房Main frame dead -weight 主机自重mainframe computer 大型计算机；主机电脑 返回 main-frame