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betterment and reconstruction of existing railway
释义
betterment and reconstruction of existing railway
Encyclopedia
工学
铁路选线设计
释
betterment and reconstruction of existing railway
既有线加强与改建
对运营铁路进行技术改造。通过提高既有铁路的输送能力、列车运行速度,降低运输成本,以适应经济社会发展所带来的铁路运量的快速增长以及旅客对运输质量的更高要求。
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valence
valence alternation
valence alternation pair
valence analysis
valence angle
valence band
valenceband
valence band spectra
valence band structure
valence bond
valence bond configuration interaction(VBCI)method
valence bond perturbation theory(VBPT)method
valence bond self-consistent field(VBSCF)method
valence bond structure
valence bond theory
valence-bond theory
valence controllable semiconductor
valence correspondence
valence crystal
valence deflection angle
valence electron
valence electron approximation
valence fluctuation
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