Timekeeping instruments — Wrist-chronometers with spring balance oscillator
计时仪器——带弹簧平衡振荡器的腕表
发布日期:
2009-11-30
ISO 3159:2009规定了术语“计时器”的定义,描述了腕式计时器的类别、测试程序和可接受的最低要求。
ISO 3159:2009 lays down the definition of the term “chronometer”, describing the categories, the test programme and the acceptable minimum requirements for wrist-chronometers.