zone off把…划为独立的区域zonen.地域；地带；地区zone of preference for acceptance优先接受区域zone of high technique industries高新技术园区zone of provisional calcification临时钙化区zone of calcified cartilage matrix软骨基质钙化区zones for water-saving irrigation节水灌溉分区zone of discontinuous soil moisture不连续土壤水分带zone melting with focused radiation辐射聚焦的区域熔炼zone of low temperature cabonization低温碳化层zone of hypertrophic cartilage cells软骨细胞增生带zone melting by electrical discharge放电加热的区域熔炼