标准编号:ISO 9645:1990
中文名称:声学.两轮式机动自行车行驶时发出噪声的测定.工程法
英文名称:Acoustics — Measurement of noise emitted by two-wheeled mopeds in motion — Engineering method
发布日期:1990-04
标准编号:ISO 9645:1990
中文名称:声学.两轮式机动自行车行驶时发出噪声的测定.工程法
英文名称:Acoustics — Measurement of noise emitted by two-wheeled mopeds in motion — Engineering method
发布日期:1990-04