词汇	focussing ring
释义	focussing ring 调焦圈,对光环
随便看	registration of domain names registration of electors registration of encumbrances registration of errors registration of establishment registration of estate title registration office registration of functional form registration of house registration of import certificate registration of incorpration registration of infectious disease registration of juristic persons Registration of Lease registration of marriage registration of meter registration of mining registration of motor vehicle registration of movable property registration of name change registration of objects registration of patent registration of patents Registration of Patents Ordinance registration of pledge