iswas

简单的计算装置; 简单计算装置

词形变化

not attested 复数

释义与例句

n.
  1. 1.

    A kind of hand-held slide rule used for predicting the location of a target based on its current and recent positions.

    历史 俚语 政治 军事

词源

From is + was, i.e. for calculating where the target will be based on where it is and was.

来源：wiktionary