六分仪,sextant
1)sextant[英]['sekst?nt][美]['s?kst?nt]六分仪
1.Study on Angle Measuring Sensing System of Nautical Electronic Sextant;航海电子六分仪测角传感系统研究
2.This paper analyzes the causes of vertical difference from observing the altitude by sextant on board ship.分析了船舶在航行中利用六分仪观测天体高度时误差产生的原因,讨论了误差的属性,给出了误差修正公式及减小或消除误差的方法。
英文短句/例句

1.horizontal glass六分仪)地平镜六分仪)定镜
2.low light level television camera-sextant低光水平线电视六分仪
3.I...found a sextant..." Now, " I said, " they take the sun through this thing."我……找到一个六分仪。“好啦
4.cine-sextant tracking telescope电影六分仪跟踪望远镜
5.detachable bubble horizon sextant可卸式气泡水准六分仪
6.hydrographic sextant水文地理测量六分仪
7.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。
8.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
9.I…found a sextant…"Now, " I said,"they take the sun through this thing."我……找到一个六分仪。“好啦!”我说,“他们就是用这个测定太阳的高度。”
10.A medieval instrument, now replaced by the sextant, that was once used to determine the altitude of the sun or other celestial bodies.星盘一种中世纪的仪器,曾用来测量太阳或其它天体的高度,现在已被六分仪取代
11.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。
12.It's all for sale by the way. Like the sextant here. 50 dollars for this, this is a bargain.顺便提一下,这些东西都是可能出售的。这个是六分仪,50美元,可以还价。
13.six-port automatic network analyzer六端口自动网络分析仪
14.Analysis and Optimized Circuit Design of Six-Port Re-flectometers六端口反射仪的分析及最佳电路设计
15.Automatic Analyzer of Six Elements Mn、Cr、P、Mo、V、Ni in Alloy Steels合金钢中锰、铬、磷、钼、钒、镍六元素自动分析仪
16.Analysis on the Symbolic Meanings of Funeral Ritual of the Buyi Nationality of Liuzhi District in Guizhou贵州六枝布依族丧葬仪式的象征意义分析
17.The Assessing of the Measuring Uncertainty of Detection Limit of 6 Elements of ICP Emission SpectrometerICP发射光谱仪测六种元素检出限测量结果不确定度分析
18.The draw for the raffle takes place on Saturday.抽彩仪式星期六举行.
相关短句/例句

sextant[英]['sekst?nt][美]['s?kst?nt]六分仪<测>
3)sextant mirror六分仪镜
4)sextant stand六分仪座
5)pig yoke六分仪或八分仪
6)sextant altitude六分仪高度六分仪高度
延伸阅读

六分仪  用来测量远方两个目标之间夹角的光学仪器。通常用它测量某一时刻太阳或其他天体与海平线或地平线的夹角,以便迅速得知海船或飞机所在位置的经纬度。六分仪的原理是牛顿首先提出的。六分仪具有扇状外形,其组成部分包括一架小望远镜,一个半透明半反射的固定平面镜即地平镜,一个与指标相联的活动反射镜即指标镜。六分仪的刻度弧为圆周的1/6。使用时,观测者手持六分仪,转动指标镜,使在视场里同时出现的天体与海平线重合。根据指标镜的转角可以读出天体的高度角,其误差约为±0奞2~±1┡。在航空六分仪的视场里,有代替地平线的水准器。这种六分仪一般还有读数平均机构。六分仪的特点是轻便,可以在摆动着的物体如船舶上观测。缺点是阴雨天不能使用。二十世纪四十年代以后,虽然出现了各种无线电定位法,但六分仪仍在广泛应用。