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amateur radio communication activities
释义
amateur radio communication activities
Encyclopedia
教育学
无线电运动
释
amateur radio communication activities
业余电台通讯活动
利用业余电台进行通讯联络以研究无线电技术的一种活动。
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Rara Mendut
R. A. Rankin
R. A. Rankin (1915—2001)
rare
rare and endangered marine species
rare and endangered plants
rare and relic plant of China
rare and wonderful view of Xiao-Xiang
Rare Books Preservation Society
rare earth alloy
rare earth and transition metal doped solid state laser
rare-earth and transition metal doped solid-state laser
rare-earth-based AB5-type hydrogen storage alloy
rare earth bromide
rare earth carbonate
rare earth catalytic material
rare earth centrifugal extractio separation and purification
rare-earth chelate
rare earth chloride
rare earth chloride lithium thermal reduction
rare earth cluster compound
rare earth complexes materials
rare earth compounds
rare-earth-doped glass
rare earth element
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