Radio Detection Finder Station

무선방위탐지국

Radio Log

무선일지

Radiotelegraph Auto Alarm

무선전신 비상자동수신기

Radio Telegraph, Wireless Telegrahp

무선전신기

Radio Beacon Station

무선표시국

Reaction Rudder

반동타

Reaction Turbine

반동터빈

Reaction Stress

반작용응력

Radiograhp

방사선사진

RT : Radiographic Test

방사선투과시험