a. c .balance indicator 交流平衡指示器
a. c. bridge 交流电桥
a. c. current calibrator 交流电流校准器
a. c. current distortion 交流电流失真
a. c. induced polarization instrument 交流激电仪
a. c. potentiometer 交流电位差计
a. c. resistance box 交流电阻箱
a. c. standard resistor 交流标准电阻器
a. c. voltage distortion 交流电压校准器
a. c. voltage distortion 交流电压失真
Abbe comparator 阿贝比长仪
aberration 象差
ability of anti prereduced component 抗先还原物质能力
ablative thickness transducer [sensor] 烧蚀厚度传感器
abrasion testing machine 磨损试验机
absolute calibration 绝对法校准
absolute coil 独立线圈
absolute error 绝对误差
(absolute)error of measurement 测量的(绝对)误差
absolute gravimeter 绝对重力仪
absolute gravity survey