submerged telegraph repeater

... 水下油罐^ submerged tank 海缆电报转发器^ submerged telegraph repeater 海缆电话增音机^ submerged telephone repeate…

... ) sea-bed diverter 海底分流器 ) submerged telegraph repeater 海底电报转发器 ) base fluid swivel [海]底部输油旋转接头 ...