象限仪

基于MEMS加速度传感器的数字式象限仪

Digital Quadrant Based on MEMS Accelerometer

这是象限仪，80块就买得到大减价大减价

This here is the quadrant , which you can get for 80 bucks .

用武汉流星雷达观测象限仪座流星雨期间的流星速度

Observation on Meteor Velocities of the Quadrantid Meteor Shower by Using the Wuhan Meteor Radar

论证了长期以来存在的用象限仪标定炮耳轴倾斜传感器的方法误差。

In this paper , it is founded the error existed for a long time , which is caused by using the quadrant improperly to refer the trunnion-tilt sensor .

复杂的仪器使得欧洲人得以进行海上探险，例如星盘、象限仪及好的航海图都是由穆斯林所发明的。

Sophisticated instruments which were to make possible the European voyages of discovery , such as the astrolabe , the quadrant , and good navigational maps , were also developed by Muslims .

这位老先生的存货包括精密计时表、晴雨表、望远镜、罗盘、航海图、地图、六分仪、象限仪，以及用于确定船舶航线、进行船舶计算、研究船舶所在地的各种仪器的样品。

The stock-in-trade of this old gentleman comprised chronometers , barometers , telescopes , compasses , charts , maps , sextants , quadrants , and specimens of every kind of instrument used in the working of a ship 's course , or the keeping of a ship 's reckoning , or the prosecuting of a ship 's discoveries .