I.S. EN 22157:1990被替代
Dental Rotary Instruments - Nominal Sizes and Designation
出版：National Standards Authority of Ireland
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基本信息
标准编号： I.S. EN 22157:1990
标准类别：Standard
出版单位：National Standards Authority of Ireland
标准页数：0
标准简介
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.
