单转子摆式电罗经
single-gyro pendulous gyrocompass
双回转仪摆式电罗经
twingyro pendulous gyrocompass
高精度电罗经
high-precision gyrocompass
电罗经装设
gyro compass installation
电罗经象限误差
intercardinal rolling error
电罗经天文导航系统
gyro erectional navigation
电罗经方位
gyrocompass bearing {= GB
gyro bearing
Bpgc
电罗经
gyrocompass
electric gyrocompass
Electromagnetic controlled gyrocompass
gyro compass
gyroscopic compass
电磁控制电罗经
electromagnetically controlled gyrocompass