英语词汇“ordnance datum”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ordnance datum
释义	ordnance datum ordnance datum n (Surveying) mean sea level calculated from observation taken at Newlyn, Cornwall, and used as the official basis for height calculation on British maps. Abbreviation: OD EncyclopediaSeeOD
随便看	dispersion relation dispersion relation preserving dispersion relations dispersions dispersion shifted dispersion shifted fiber dispersion-shifted fiber dispersion-shifted single-mode fiber dispersion slope compensation fiber dispersion strengthening dispersion-supported transmission dispersion zone dispersity dispersive dispersive absorbing boundary condition dispersive boundary condition dispersive electrode dispersive extended x-ray absorption fine structure dispersive line dispersively dispersive medium dispersiveness dispersive power dispersive replication dispersive solid phase extraction

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