单词sextant
n.: 六分仪（用以计算船舶或飞机的准确位置）
网络: 六分圆；六分仪座；六位组
六分仪（用以计算船舶或飞机的准确位置）:
an instrument for measuring angles and distances, used to calculate the exact position of a ship or an aircraft
【天文学】六分仪(星)座
〔罕用语〕圆的六分之一
复数：sextants
When on the surface, the quartermasters may use a sextant to obtain navigation fixes as a backup to our modern day systems.
当在水面时，航海士官长们可以使用六分仪来获得航行定位以作为我们现代定位系统的备用资料。
Imagine trying to deduce this with the naked eye, a sextant and little else.
试想一下在没有六分仪和其他仪器的帮助下，仅用肉眼观测就来推断的困难吧。
Maria taught them to use the sextant, an instrument measuring the height of the sun from the horizon.
玛丽向他们传授使用六分仪的方法，这种仪器可以用来测算太阳距海面的高度。
He revealed the secret of a sextant. A device for mastering distances at sea, it could turn tides, winds and waves into powerful allies.
他透露了六分仪的秘密，这是航海时测量距离的仪器，它能将潮流、风和浪变成强大的联合。
Sextant: Relatively useless without tables and a chronometer.
航海六分仪：没有手表和天文台表就没用了。
Reduction from sextant altitude to observed altitude for any of the 9110 stars, nine planets, and sun and moon.
从六分仪观测海拔高度降低至9110年的任何恒星，九个行星，太阳和月亮。
an instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration.
测量天体角度的仪器；类似于六分仪但是带有度的刻度。
An instrument based on the principle of the sextant but employing only a45=Angle, used as an aid in navigation.
八分仪以六分仪的规则为基础设计的一种仪器，但只采用45°角，用来帮助航海
A navigator also had to know how to use a complex instrument called a sextant.
导航器还必须知道如何使用复杂的仪器称为六分仪。
On that month-long trip he carried no compass, sextant or charts.
一个月的旅行，罗盘、六分仪、海图，什么都没带。