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short wave radio time service
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short wave radio time service
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short wave radio time service
短波授时
将标准时间信号调制在波长为3~30兆赫兹无线电信号上,并通过发播台站发播给时间用户使用的方法、技术和过程。
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culture of Anthocidaris crassispina
culture of Apostichopus japonicus
culture of Artemia
culture of black carp
culture of black grunt,culture of Hapalogenys nitens
culture of Boleophthalmus pectinirostris
culture of Chanos chanos
culture of Chelon haematocheilus
culture of Chlamys farreri
culture of Chromileptes altivelis
culture of chrysanthemum in Tianjin
culture of clamworm
culture of conch
culture of crab
culture of Crassostrea gigas
culture of Crassostrea gigas angulata
culture of Cyclina sinensis
culture of echinoderm
culture of echiuroid worm
culture of edible jellyfish
Culture of Education
culture of Epinephelus akaara
culture of Epinephelus coioides
culture of Epinephelus fuscoguttatus
culture of Epinephelus lanceolatus
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