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释义
Encyclopedia
理学
放射性元素
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copernicium
人工放射性元素,元素符号Cn,原子序数112,半衰期最长的同位素的质量数285。属周期系ⅡB族。为纪念波兰天文学家N.哥白尼[注]而命名。曾被称为112号元素(ununbium),符号Uub。
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video communication
video compact disc
video compact disc, video CD, VCD
video compression
video conference
video conference system for water conservancy departments
video conferencing
video content screening
video converter
video copy detection
video crystal
video data modeling
videodensitometer
video disk
video disk system
video distributor
video effect
video encoding and decoding device
video-extensometer
video file
video flatness analysis device
video frame
video frequency
video glasses
videogrammetry
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