DIN EN ISO 20957-9:2019
固定式训练设备 第9部分:椭圆机、附加特定安全要求和测试方法(ISO 20957-9:2016 + Amd 1:2019)(包括修正案 A1:2019)
Stationary training equipment - Part 9: Elliptical trainers, additional specific safety requirements and test methods (ISO 20957-9:2016 + Amd 1:2019) (includes Amendment A1:2019)