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短波授时
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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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water supply type
water surface leveling
water surface slope discharge measurement
water surface traction test
water surge
water survey
water swelling strip
water system layout in garden
water system of hydropower station
water system planning
water table depth
water tariff
water temperaturein marginal sea of China
water temperature measuring instrument
water temperature observation
water test
water thawing equipment
water-tight
watertight bulkhead
water-tight connector
water tightness
water tipper
Waterton Glacier International Peace Park
Waterton Lakes National Park
water toughening
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