测距仪    Rangefinders

距离测定用激光雷达    Rang-finding Lidar Systems

稀土族材料    Rare Earth Materials

资讯用仅读型光碟机    READ-ONLY OPTICAL DISC DRI597VES

插座    Receptacles

资讯用仅写一次型光碟机    RECORDABLE OPTICAL DISC DRIVES

人力服务    Recruitment Services and Executive Search

反射望远镜    Reflecting Telescopes

星状光纤耦合器(反射形)    Reflection Type Star Optical Couplers

折射率液    Refractive Index Liquids

折射计    Refractometers

排除频带滤光镜    Rejection Band Filters

替续透镜    Relay Lenses

设备出租    Rental Equipment

激光用共振腔    Resonators for Lasers

资讯用可覆写型光碟机    REWRITABLE OPTICAL DISC DRIVES

光纤带    Ribbon

直角棱镜    Right-Angle; Rectangular Prisms

环形激光流速计，光纤陀螺仪    Ring Laser Velocimeters, Optical Fiber Laser Gyros

棱镜 Rochon Prisms    Rochon

脊角棱镜    Roof Prisms

回转台定位设备    Rotation Stage Positioning Equipment

转速仪    Rotational Speed Meters

红宝石激光    Ruby Lasers

VT    R摄影机 VTR Cameras