“position doubtful”的概念、定义、翻译、参考文献-科学参考

单词	position doubtful
释义	position doubtful [pǝ`zish·ǝn `dau̇t·fül] ^NAVIGATION Of uncertain position; used principally on charts to indicate that a wreck, shoal, and so on, has been reported in various positions and not definitely determined in any.
随便看	equivalent diameter equivalent electrons equivalent elements equivalent equations equivalent evaporation equivalent focal length equivalent footcandle equivalent four-wire system equivalent head wind equivalent height equivalent magnetic length equivalent map projection equivalent nitrogen pressure equivalent noise conductance equivalent noise pressure equivalent noise resistance equivalent noise temperature equivalent nuclei equivalent orifice equivalent periodic line equivalent potential temperature equivalent resistance equivalent round equivalent sine wave equivalent tail wind

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