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fountain clock steered time scale
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fountain clock steered time scale
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fountain clock steered time scale
喷泉钟驾驭时标
结合喷泉钟高准确度和商品原子钟组的稳定性与可靠性,产生高准确、稳定、可靠时间频率信号的技术方案。国际计量局(BIPM)使用这种方案计算产生出国际标准时间(UTC)。
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relative molecular weight
relative motion
relative movement
relative navigation
relative nearness
relative neighborhood
relative norm
relative normal
relative normal curvature of conjugate tooth-surfaces
relative nullity
relative number
relative number of spots
relative number of sunspots
relative operating characteristic
relative orbit
relative orbital elements
relative order
relative orientation
relative overpopulation
relative parallax
relative partial dispersion
relative partial molar enthalpy
relative performance evaluation
relative permeability
relative permittivity
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