词汇	preformed plate
释义	preformed plate 预留板
随便看	underwater effect underwater ejection underwater ejection seat underwater electrical underwater electrical cable underwater electrical slip ring underwater electric field underwater electric manipulator Underwater Electric Potential underwater electroacoustics underwater electroacoustic transducer underwater electrode underwater electromagnetic field underwater emergency repair engineering vessel underwater emission underwater emission and direction frequencies underwater emission-and direction frequencies underwater engineering Underwater Engineering Group underwater environment underwater equipment Underwater escape and rescue underwater excavation underwater excavator underwater execution