Barriera巴列拉barriern.栅栏；障碍物；屏障barrier-free tourism无障碍旅游barrier island complex障壁岛复合体barriers of technology技术壁垒barrier film photocell阻挡层光电管barrier function method障碍函数法barrier layer rectifier阻挡层整流,结型整流barriers in development发展障碍barrier to market entry市场进入壁垒barriers to development成才障碍barrier synchronization障碍同步