reference test pieces,對比試塊

reference value,參比值

reference-value method,參比值法

reference-value scale(of a quantity or property),（量或特性）參比值標度

reference variable,參比變量

reference voltage,基准電壓

reference wave,參考聲束

reflected wave,反射波；回波

reflecting sketchmaster,反光轉繪儀

reflection electron microscope,反射電子顯微鏡

reflection grating,反射光柵

reflection method,脈衝反射法

reflection nephoscope,反射測云器

reflective optic tachometric transducer,反光式轉速傳感器

reflectometer,反射表

reflector path,外光路

refracting telescope,折射望遠鏡

refractive humidity transducer [sensor],折射式濕度傳感器

refractometer,折射鹽度計

refrigerant(pressure)gauge,致冷壓力表

refrigeration,致冷

regenerative braking,回饋制動；再生制動

regional model,區域模型

register,寄存器

register(of an integrating instrument),(積分式儀表的）計度器

registered standard,注冊標准

regression,回歸

regular velocity distribution,規則速度分布

regulating device,調節裝置

regulating unit,調節單元

regulation,法規；調節

regulator,調節器

rejection,抑制

relative aperture,相對孔徑

relative error,相對誤差

relative flow coefficient,相對流量系數

relative gravity surver,相對重力測量

relative humidity,相對濕度

relative (measurement) method,相對式測量法

relative precision,相對響應值

relative retention value,相對保留值

relative sensitivity coefficient,相對靈敏度系數

relative stability,相對穩定性

relative tolerance between forward and backward in indicating value,示值進回程相對誤差

relative travel,相對行程

relative variation in the indicating value,示值相對變動值

relative viscosity,相對粘度

relaxation process,弛豫過程

relaxation testing machine,松弛試驗机

relaxation vibration,張弛振動

relay,繼動器；繼電器

relay characteristics,繼電（器）特性

relay control system,繼電控制系統

release mechanism for plankto net,浮游生物网閉鎖器

relevant failure,關聯失效

relevant specification,有關規范

reliability,可靠性；可靠度

reliability assessment,可靠性評估

reliability block diagram,可靠性方框圖

reliability certification,可靠性認証

reliability compliance test,可靠性試驗証試驗

reliability design review,可靠性設計評審

reliability determination test,可靠性測定試驗

reliability evaluation,可靠性評定

reliability evaluation from demonstration data,利用驗証數据的可靠性評定

reliability growth,可靠性增長

reliability improvement,可靠性改進

reliability model,可靠性模型

reliability program,可靠性計划

relief valve,釋放閥

reluctive pressure transducer,磁阻式壓力傳感器

reluctive transducer [sensor],磁阻式傳感器

remanent attraction force,殘留吸力

remote command control,指令遙控

remote control,遙控

remote control command,遙控指令

remote controlled Niskin sampler,尼斯金遙控采水器

remote manipulator,遙控操作器

remote measuring meteorograph,遙測气象記錄儀

remote-measuring thermohygrograph,遙測溫濕記錄儀

remote printing,遠程打印

remote regulating,遙調

remote sensing,遙感

remote sensing instrumentation for oceanography,海洋學遙感儀器

remote sensing platform,遙感平台

remote sensing system,遙感系統

remote sensing technique of oceanography,海洋學遙感技術

remote set point adjuster,遠程設定點調整器

remote terminal,遠程終端設備

remote thermometer,遙測溫度表

removable back plate,可拆卸的后蓋板

repair rate,修复率

repair time,修复時間

repeatability,重复性

repeatability error,重复性誤差

repeatability of wavelength,波長重复性

repeated impact testing machine,多次衝擊試驗机

repeater,轉發器