bubble sextant[水运] 气泡六分仪;水泡六分仪
pendulum sextant[水运] 摆式六分仪;锤摆水准六分仪
periscopic sextant潜望六分仪;[航] [军] [船] 潜望镜六分仪
sextant reading六分仪读数
sextant observation六分仪测量
gyro sextant回转六分仪;陀螺六分仪
surveying sextant测量六分仪;水道测量六分仪
double sextant双重六分仪;双测量六分仪
hydrographic sextant水道测量用六分仪;航道测量六分仪
gyroscope sextant[航] [水运] 陀螺六分仪
N-COUNT（可数名词） A sextant is an instrument used for measuring angles, for example between the sun and the horizon, so that the position of a ship or aeroplane can be calculated. 六分仪; 用于测算船只或飞机位置的仪器