acoustical hologram,聲全息圖
acoustical holography,聲全息
acoustical holography by electron-beam scanning,電子束掃描聲全息
acoustical holography by laser scanning,激光束掃描聲全息
acoustical holography by mechanical scanning,機械掃查聲全息
acoustical imaging by Bragg diffraction,布拉格衍射聲成像
acoustical impedance method,聲阻法
acoustical lens,聲透鏡
acoustically transparent pressure vessel,透聲壓力容器
acquisition time,取數(shù)據(jù)時間
actinometer,光能計；直接日射強度表；日射表
(active)energy meter,（有功）電度表
active gauge length,有效基長
active gauge width,有效基寬
active metal indicated electrode,活性金屬指示電極
active remote sensing,主動遙感
active transducer[sensor],有源傳感器
activity,活度 activity coefficient,活度系數(shù)
actual material calibration,實物校準
actual time of observation,實際觀測時間
actual transformation ratio of voltage transformer,電壓互感器的實際變化
acoustical holography,聲全息
acoustical holography by electron-beam scanning,電子束掃描聲全息
acoustical holography by laser scanning,激光束掃描聲全息
acoustical holography by mechanical scanning,機械掃查聲全息
acoustical imaging by Bragg diffraction,布拉格衍射聲成像
acoustical impedance method,聲阻法
acoustical lens,聲透鏡
acoustically transparent pressure vessel,透聲壓力容器
acquisition time,取數(shù)據(jù)時間
actinometer,光能計；直接日射強度表；日射表
(active)energy meter,（有功）電度表
active gauge length,有效基長
active gauge width,有效基寬
active metal indicated electrode,活性金屬指示電極
active remote sensing,主動遙感
active transducer[sensor],有源傳感器
activity,活度 activity coefficient,活度系數(shù)
actual material calibration,實物校準
actual time of observation,實際觀測時間
actual transformation ratio of voltage transformer,電壓互感器的實際變化