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国家标准局最近批准发布了6项声学国家标准.这些标准由全国声学标准化技术委员会归口及审查通过.标准的编号、名称和发布、实施日期如下. GB 4963-85 自由场纯音标准等响线 1985-02-28发布,1985-10-01实施; GB 4964-85 内河航道及港口内船舶辐射噪声的测量 1985-02-28发布,1985-10-01实施; GB 5111-85 铁路机车车辆辐射噪声测量1985-04-20发布,1985-12-01实施;
National Bureau of Standards recently approved the issuance of six acoustic national standards.These standards by the National Acoustic Standardization Technical Committee and approved by the review.The standard number, name and release, the implementation date is as follows.GB 4963-85 free field pure tone standard equalizer 1985 -02-28 Issued on: 1985-10-01 Implementation; GB 4964-85 Measurement of Radiated Noise of Inland Waterways and Ships Within the Harbor 1985-02-28 Issued, Issued on: 1985-10-01 Implementation; GB 5111-85 Radiated Noise of Rolling Stock and Vehicles Measurement 1985-04-20 release, implemented on 1985-12-01;