1)true middle latitude,真中分纬度2)mid-latitude,中分纬度3)mid-latitude sailing method,中分纬度法4)middle latitude sailing,中分纬度航法5)correction of middle latitude,中分纬度改正量6)tables for correcting mean mid.lat.,中分纬度改正表
用法例句
Discuss the relationship between Mercator sailing and middle latitude sailing;