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瓦级超声功率副基准操作技术规范
Operating Technical Norm of the Secondard Standard for the Ultrasonic Power of Watt Level
价格:¥0.00
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瓦级超声功率基准操作技术规范
Operating Technical Norm of Primary Standard for Watt Level Ultrasonic power
价格:¥0.00
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低频(1~2000 Hz)水声声压基准操作技术规范
Operating Technical Norm of Sound Pressure Primary Standard for Low Frequency (1~2000KHZ)Underwater Sound
价格:¥0.00
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中频(2~100 kHz)水声声压基准操作技术规范
Operating Technical Norm of Sound Pressure Primary Standard for Medium Frequency (2~100KHZ)Underwater Sound
价格:¥0.00
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飞机飞行振动环境测量中振动加速度计校准技术要求
价格:¥0.00
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