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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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transformation by homothetic sections
transformation by parallel normals
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transformation diagram of undercooled austenite
transformation drawing apparatus
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transformation equation
transformation event
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transformation groups in Riemannian manifolds
transformation in accord with constitution
transformation into itself
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transformation law
transformation matrix
transformation method
transformation of air mass
transformation of an equation
transformation of a system
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