“heading”的概念、定义、翻译、参考文献-科学参考

单词	heading
释义	heading [`hed·iŋ] ^{CIVIL ENGINEERING} In tunnel construction, one or more small tunnels excavated within a large tunnel cross section that will later be enlarged to full section. ^NAVIGATION 1. The horizontal direction in which a ship actually points or heads at any instant, expressed in angular units from a reference direction, usually from 0° at the reference direction clockwise through 360°. 2. In air navigation, the horizontal direction in which an aircraft points or heads, that is the direction of the longitudinal axis, measured as in the first definition. ^{PETROLEUM ENGINEERING} An intermittent flow from an oil well.
随便看	concerted evolution concerted reaction concertina wire concession lease conch conchiolin conchoid conchoidal conchoid of Nicomedes Conchorhagae Conchostraca concomitant concordance concordant body concordant coastline concordant drainage concordant injection concordant pluton concordant segregation concrescence concrete concrete beam concrete block concrete bridge concrete bucket

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