graphic portable ammeter

moving iron recording ammeter

记录型动铁式电流表

AC moving iron round instrument

交流动铁式圆形电表

autobalancing digital display and recording V-meter

自动平衡数显记录式电压表

double-range recording flowmeter

双量程记录式流量表

galvanometer record type strong-motion instrument

电流计记录式强震仪

recording vacuum tube voltmeter

记录式真空管电压表

a device for making a record of the wave forms of fluctuating voltages or currents.

记录变动的电压或电流的波纹形式的装置。

electronic automatic balancing recorder

电子式自动平衡记录器

ectronic self-balancing type recorder

电子自动平衡式记录仪

moiving-iron instrument

动铁式/电磁系）仪表

low pressure bell-type recording flowmeter

低压钟罩型记录式流量计

sealed chart-drive motor

密封式记录纸驱动电动机

electronic instagraph

电子式运动轧件自动测量记录仪

A device that records oscillations, as of an electric current and voltage.

示波器记录（电流和电压的）摆动变化的仪器

single-channel galvanometric recorder

单通道电流测定记录仪

records electric currents generated by the brain.

记录由大脑产生的电流。

DC moving coil square instrumert

直流动圈式方形电表

DC moving coil round instrument

直流动圈式圆形电表