“cardinal system”的概念、定义、翻译、参考文献-科学参考

单词	cardinal system
释义	cardinal system [`kärd·nǝl ´sis·tǝm] ^NAVIGATION In marine operations, a buoyage system in which the buoys are assigned distinctive shape, color, and number in accordance with location relative to the nearest obstruction and pertinent to the cardinal points.
随便看	driller's method drill extractor drill feed drill fittings drill floor drill footage drill gage drill grinding gage drill hole drill-hole logging drill-hole pattern drill-hole survey drill-in drilling drilling break drilling column drilling fluid drilling machine drilling mud drilling platform drilling rate drilling time drilling time log drill jig drill jumbo

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