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骨导听力零级基准操作技术规范
Operating Technical Norm of the Primary Standard for the Audiometric Zero Level of Bone Conduction
价格:¥0.00
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气导听力零级基准操作技术规范
Operating Technical Norm of the Primary Standard for Audiometric Zero Level of Air Conduction
价格:¥0.00
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毫瓦级超声功率副基准操作技术规范
Operating Technical Norm of the Secondary Standard for the Ultrasonic power of Milliwatt Level
价格:¥0.00
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毫瓦级超声功率基准操作技术规范
Operating Technical Norm of the Primary Standard for Milliwatt Level Ultrasonic power
价格:¥0.00
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高频(0.1~5 MHz)水声声压基准操作技术规范
Operating Technical Norm of Sound Pressure Primary Standard for High Fregyency(0.1~5MHZ)Underwater Sound
价格:¥0.00
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空气声声压基准(自由声场)操作技术规范
The Operating Technical Norm of Free field Sound Pressure Primary Standard in Air
价格:¥0.00
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电声自由场声压基准操作技术规范
Operating Technical Norm of Primary Standard for Electroacoustical Freefield Acoustical Pressure
价格:¥0.00
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耦合腔互易法声压副基准操作技术规范
Operating Technical Norm of the Secondary Standard for Coupler Reciprocity Method Acoustical Pressure
价格:¥0.00
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耦合腔互易法声压基准操作技术规范
Operating Technical Norm of the Primary Standard for the Sound Pressure of Reciprocity Technigue
价格:¥0.00
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1Hz~1000Hz测量水听器
Verification Regulation of Measuring Hydrophone in the Frequency Range 1Hz to 1000Hz
价格:¥0.00
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