dead reckoning

名词 n.
中文释义

英文释义

名词 n.
  1. A method of estimating the position of a ship or aircraft by applying estimates of the distance and direction travelled from a previously known position. In respect to ships/boats, it excludes the effect of wind and current on the vessel. Compare with estimated position. Abbreviation: DR countable,uncountable

词形变化

dead reckonings plural ded reckoning alternative

词源

Uncertain. Not short for deduced or deductive, but this belief explains the alternative spelling ded reckoning (which actually originated centuries later).
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