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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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Collected Essays by Scholars in the Central Plains
Collected Essays of Quyi
Collected Essays on Drama
Collected Essays on Dramatic Education
Collected Essays on Facial Mask Painting
Collected Essays on NACTA and Contemporary Drama
Collected Essays on Painting From the Four-Bronze-Drum Studio
Collected Essays on Statecraft of Qing Dynasty
Collected Essays on Tang Xianzu
Collected Essays on the History of Chinese Opera
Collected Exchange Poems on Mount Heng
Collected Experience in Operatic Performance
Collected Explanation of Function Words in Ancient Writings
Collected Explanation of Words in Classical Novels
Collected Explanation of Words in Operas
Collected Facial Masks of Peking Opera
Collected Facial Paintings of Classical Chinese Opera
Collected Famous Writings on Painting Through the Ages
Collected Folk Songs of Bamboo Slips Collected by Shanghai Museum
Collected Hebe Bangzi Opera Series
Collected Inscriptions From the Swift Rain Hall
Collected Libretti, Scores and Spoken Parts of Kunqu Opera
Collected Lüshi Poems of the Tang and Song Dynasties
Collected Manchu Book
Collected Materials on Errentai in Inner Mongolia
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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更新时间:2026/9/18 20:08:31