Russian ⇄ Chinese English

гидроакустическая разведка stresses
mil.	hydroacoustic reconnaissance; hydroacoustic intelligence; acoustical intelligence; acoustic intelligence
mil., avia.	sonic ranging and detection; sound detection and ranging
mil., navy	underwater acoustic surveillance (или ГАС Val_Ships); passive sonar surveillance (Val_Ships)
tech.	sonar intelligence
гидроакустической разведки
mil., navy	sonar (Alex_Odeychuk)

гидроакустическая разведка: 12 phrases in 3 subjects

Military	5
Navy	4
Technology	3