词汇	direct clear
释义	direct clear 直接清零
随便看	navigational computer unit readout navigational computer unit readoutncur navigational condition navigational control and display unit navigational control and display unitncdu Navigational Control Indicator navigational control mode navigational control system navigational correction navigational countermeasure navigational danger navigational danger report navigational data Navigational Data Assimilation Computer navigational data log navigational datum navigational difficulties Navigational Digital Computer navigational draft navigational drilling navigational duty navigational echo sounder navigational education and training navigational electronics navigational environment