Technical requirements and test methods for ringing,power sources,alarm and distribuing frame in manual toll telephone switching equipments
中国标准分类号: M(通信、广播) ; M32(数据通信设备) | 发布日期:1988-04-13 实施日期:1988-10-01
Methods for measurements of basic parameters of video heads and their upper cylinders
中国标准分类号: M(通信、广播) ; M71(录制设备) | 发布日期:1987-12-28 实施日期:1989-09-01
Methods of measurement for the characteristics of sound reinforcement in auditoria
中国标准分类号: M(通信、广播) ; M70(广播、电视设备综合) | 发布日期:1985-02-16 实施日期:1985-08-01
Characteristics of PAL-D television broadcasting system
中国标准分类号: M(通信、广播) ; M61(广播、电视系统) | 发布日期:1995-12-20 实施日期:1996-12-01
Designational methods of the model number for magnetic head of cassette tape recorder
中国标准分类号: M(通信、广播) ; M71(录制设备) | 发布日期:1987-12-28 实施日期:1988-07-01
Methods for the measurement of the fundamental parameters of audio frequency power amplifier(megaphone)
中国标准分类号: M(通信、广播) ; M72(音响、电声设备) | 发布日期:1980-07-10
Limits of radio interference of industrial,scientific and medical (ISM) radio frequency equipment
中国标准分类号: M(通信、广播) ; M60(广播、电视网综合) | 发布日期:1984-12-15 实施日期:1985-10-01
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