定位标记 [测] positioning mark ; Location marker ; position mark ; fiducial mark

进位标志 [计] carry flag ; CF ; Carry out Flag

水位标尺 water gauge ; staff gauge ; water-level scale ; graduated staff gage

应急无线电示位标 EPIRB ; emergency position-indicating radio beacon

无线电指位标 marker beacon ; marker radio beacon

水位标记 water level mark

复位标志 RST

方位标 [天] azimuth mark

水位标 water level indicator ; staff gauge