步进式垂线坐标仪
Step motor type pendulum telecoordinometer

2011-01-09

步进式引张线仪
Step motor type wire alignment telemeter

2011-01-09

Step motors; mounting dimensions, type plate, electrical connection
步进电机；安装尺寸、铭牌、电气连接

1976-10-01

大坝监测仪器 垂线坐标仪 第1部分：步进电机式垂线坐标仪
Instrument for dam monitoring - Pendulum coordinometer - Part 1: Step motor type pendulum coordinometer

2008-11-21

大坝监测仪器 引张线仪 第1部分：步进电机式引张线仪
Instrument for dam monitoring - Exte nsion line gauge - Part 1: Step motor type extension line gauge

2008-11-21