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short wave radio time service
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short wave radio time service
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工学
授时
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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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wood processing defects
wood property
wood protection
wood protection in storage
wood pulping and papermaking
wood pyrolysis
wood roof construction
wood rosin
wood-rot fungi
Wood's anomaly
wood science and technology
wood scrowes
wood sculptures unearthed at Chu tombs of Changtaiguan Township
wood sculptures unearthed at Han tombs of Wuwei City
wood security
wood slip (book)
Wood's metal
wood-sorrel family
wood special drying
wood spirit
Woods-Saxon potential
wood stair
Woodstock
wood structure
wood supply
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