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出口直接辐射式电动锥形扬声器检验规程
Rules for the inspection of electrodynamic cone loudspeakerof direct radiate type for export
价格：￥0.00
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音频、视频及视听系统设备用图形符号
Graphical symbols for use on equipment in audio video and audio-visual systems
价格：￥0.00
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低频/甚低频发射机电性能测量方法
Methods of measurement of electrical performance for LF/VLF transmiters
价格：￥0.00
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碳粒式送话器总规范
General specification for carbon transmitters
价格：￥0.00
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低频/甚低频发射机通用规范
General specification for LF/VLF transmitters
价格：￥0.00
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背负式超短波调频电台通用规范
Generic specification for manpack ultra-short wave FM radio
价格：￥0.00
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广播电视微波工程建设标准
Specifications for construction of broadcast and television microwave projects
价格：￥0.00
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电视发射台主要设备配备标准及技术要求
Specifications for configuration of main equipment of television transmission stations and technical requirements
价格：￥0.00
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厅堂扩声系统声学特性指标
Indices of acoustic characteristics for sound reinforcement system in halls and rooms
价格：￥0.00
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广播电视录音(播音演播)室空气声隔声测量规范
Measurement specifications for airborne sound insulation in broadcast and television recording (studio) room
价格：￥0.00
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