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GB/T 15061-1994 General specifications for sensitometry of silver halide photographic materials--Part 1:Sensitometric exposure conditions of films to be exposured for incandescent tungsten and daylight 银盐感光材料感光测定通则 第1 部分:适用于白炽钨光和模拟日光曝光的试样曝光条件 - 中英文版 |
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GB/T 14716-1993 Generic specification for stored program control analogue private automatic branch telephone exchange system 程控模拟用户自动电话交换机通用技术条件 - 中英文版 |
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GB/T 14381-1993 Generic specification for stored program control digital private automatic branch telephone exchange system 程控数字用户自动电话交换机通用技术条件 - 中英文版 |
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GB/T 13137-1991 Specification for 12-channel telephone carrier terminal equipment used on the symmetric pains of 2.6/9.5 mm coaxial cable 2.6/9.5 mm综合中同轴电缆高频四芯组或高频线对12路载波电话终端设备技术条件 - 中英文版 |
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GB/T 7436-1987 Specifications of TDM equipment operating on an analog telephone-type circuit for telegraph and lower-speed data 在模拟电话电路上开放电报及低速数据的时分复用设备技术要求 - 中英文版 |
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GB/T 5444-1985 The test methods for the technical specifications of subscriber line signalling for automatic telephone switching network 电话自动交换网用户信号技术指标测试方法 - 中英文版 |
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GB/T 5443-1985 The test methods for the technical specifications of ringing and tone for automatic telephone switchingnetwork 电话自动交换网铃流和信号音技术指标测试方法 - 中英文版 |
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GB/T 5442-1985 The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network 电话自动交换网带内单频脉冲线路信号技术指标测试方法 - 中英文版 |
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GB/T 3971.3-1983 The test methods for the technical specifications of multi-frequency register signalling for telephone auto-matic switching network 电话自动交换网多频记发器信号技术指标测试方法 - 中英文版 |
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GB/T 3556-1983 Standard gray and color test chart for photography--Specifications 摄影用标准灰板、色板的技术规范 - 中英文版 |
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