direction finding and ranging
... direction finding and ranging 定向和测距 direction finder and radiobeacon 测向仪与指向标 Direction Angles and Direction cosines 方向角和方向余弦 ...
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短语
光学定向和测距
Optical direction and ranging
;
opdar
无线电定向和测距
RADAR RAdio Direction And Ranging
;
[通信]
[测]
radio direction and ranging
定向和测距装置
DDR
定向探索和测距
DIFAR
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