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电声学 飞机噪声测量仪器 运输机噪声评定用1/3倍频程声压级测量系统的性能要求
Electroacoustics. Instruments for measurement of aircraft noise-Performance requirements for systems to measure on-third-octave band sound pressure levels in noise certification of transport-category aeroplanes
价格：￥0.00
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电声学 测量电容传声器电声性能的测量方法
Electroacoustics - Measurement methods of electroacoustic characteristics for measurement condenser microphones
价格：￥0.00
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电声学 测量电容传声器通用规范
Electroacoustics - General specification of measurement condenser microphones
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超声诊断和监护设备声输出参数测量不确定度评定指南
Guide for evaluation of uncertainty in measurement of ultrasonic diagnostic and monitoring equipment acoustic output characteristics
价格：￥0.00
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超声洁牙设备.输出特性的测量和公布
Ultrasonics.Dental descaler systems.Measurement and declaration of the output characteristics
价格：￥0.00
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超声仿组织体模的技术要求
Technical requirments for ultrasonically tissue-mimicking phantom
价格：￥0.00
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超声声场特性 确定医用诊断超声热场和机械指数的试验方法
Ultrasonics.Field characterization.Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields
价格：￥0.00
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超声多普勒仿血流体模的技术要求
Technical requirements for ultrasonically blood-mimicking Doppler phantom
价格：￥0.00
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超声外科手术系统基本输出特性的测量和公布
Ultrasonics-surgical systems.Measurement and declaration of the basic output characteristics
价格：￥0.00
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超声 声场特性 确定医用诊断超声场热和机械指数的试验方法
Ultrasonics--Field characterization -Test methods for the determination of thermal and mechanical indices related to medical diagnostic ultrasonic fields
价格：￥0.00
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