observation error for carrier wave
observation error of geomagnetic component
root mean square of observation error
stochastic observation error
Amplitude error and phase error in channel
Error Analysis and Error correction
orbit error or star calendar error
adjustment for a mixed network consisting of both GPS observation and conventional observation
beam compass
质子交换膜燃料电池
质子交换摸燃料电池(PEMFC)
横杆圆规
航道罗盘
长杆圆规
长臂圆规
长圆规
粱规
梁规