GB/T 26693-2011.Timekeeping instruments- Movements-Types , dimensions and nomenclature. 1范围 GB/T 266...
GB国家标准
GB国家标准
GB国家标准
GB/T 26693-2019/ISO 3764:2016 计时仪器手表机心的形状、尺寸和名称
GB/T 26693-2019/ISO 3764:2016.Timekeeping instruments- -Types , dimensions and nomenclature of watch...