“marine sextant”的概念、定义、翻译、参考文献-科学参考

单词	marine sextant
释义	marine sextant Encyclopedia 工学〔其他导航仪表〕释 marine sextant航海六分仪手持式，用以测量天体高度或物标夹角的精密光学仪器，因其分度的弧长约为圆周长的1/6而得名，是古老的用以测定船舶位置的航海仪器。
随便看	first order and second order phase transitions of superconductor first-order arithmetic first-order characteristic model based adaptive control first order circuit first order coherence first-order coherence first-order derivative first-order design first-order difference first-order differential first-order differential equation first-order efficiency first-order efficient estimator first-order equation first-order formula first-order functional calculus first-order hold first order induction schema first-order language first order logic first-order logic first-order memristor first-order model theory first-order necessary condition first-order operator

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