I.S. EN 22157:1990被替代
Dental Rotary Instruments - Nominal Sizes and Designation
出版：National Standards Authority of Ireland
專家解讀視頻
基本信息
標準編號： I.S. EN 22157:1990
標準類別：Standard
出版單位：National Standards Authority of Ireland
標準頁數：0
標準簡介
Describes the nominal diameters of the working parts of dental rotary instruments, for example burrs, laboratory burrs, grinding instruments, diamond instruments, mandrels, etc. and the corresponding designation.
