GB/T 40362-2021.Powered toothbrushes-General requirements and test methods.GB/T 40362规定了电动牙刷的术语和定义.要求、试验方法、检验规则、标志、包装、运...
GB/T 40350-2021.General technical requirements for homeuse polyv inyl chloride artificial leather.GB/T 40350规定了家居用聚氯乙烯人造革的技术要求、试验方法和检...
GB/T 12810-2021.Laboratory glassware-Capacity methods testing and use of volumetric instruments.GB/T 12810规定了玻璃量器的容量校准和使用方法。GB/T 12810适用于容量...
GB/T 6580-2021.Glass-Resistance to attack by a boiling aqueous solution of mixed alkali-Method of test and classification.GB/T 6580规定了用沸腾混合的碳酸钠和氢氧化钠水...
GB/T 4635-2000.Image area produced by camera aperture on 35 mm motion-picture film-Position and dimensions.1范围GB/T 4635规定了摄影机片窗在拍摄35mm非变形画面,以及变...
GB 11438-1989.Ferrite cores used in broadcast recelver aerials Blank detail specification Assessment level A (可供认证用).1范围GB 11438规定了评定水平为A的广播接收机...
GB 11437-1989.Ferrite cores used in broadcast receiver aerials Sectional specification (可供认证用).1范围GB 11437规定了广播接收机天线用铁氧体磁芯(以下简称“...
GB/T 17439-1998.Specification for tr ansmission of component-coded digital television signals for contribution-quality applications at the third hierarchical level.1范围GB/T 17439规...
GB/T 14219-1993.Chinese character system teletext broadcasting specification.中文图文电视广播规范参照采用CCIR653号建议书推荐的B标准。1主题内容与适用范围...
GB 11410-1989.Technical bases of HFBC coverage.1主题内容 与适用范围GB 11410规定了短波双边带调幅广播网的主要技术指标和计算方法。GB 11410适用于短波...
