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measuring receiver
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measuring receiver
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measuring receiver
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用作电平和衰减计量标准的仪器。是检定和校准信号发生器的频率、功率、调制频率、调幅深度、调频频偏、调相相偏、调制失真和信纳比等参数的必备仪器。又称校准接收机。
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ash content of fraction
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ashen light
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