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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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Davisson, Clinton Joseph
Davisson crater
Davisson Germer experiment
Davisson-Germer experiment
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Davis Strait
Davy
Davy Chain
Davydov splitting
Davydov分裂
Davy lamp
Davy’s molten salt electrolysis
Dawalamu
Dawan
Dawan Formation
Dawangjia Dao
Dawanshan Dao
Da Waqi
Dawa Qu
Dawei Shan
Dawei Shan Guojiaji Ziran Baohuqu
Daweizi pig
Dawen He
Dawenkou
Dawenkou Culture
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