水准泡
Bubble
检测标准
实验室玻璃仪器 瓶
Laboratory glassware-Bottles
光学分划零件通用技术条件
General specification of optical components for the scale and surface defects
直接动作电测量记录仪
Direct acting electrical measuring recorders
低气压试验箱技术条件
Specifications for low air pressure test chambers
光学系统像质测试方法
Image quality of optical systems Method of determination
实验室pH计
Laboratory pH meter
激光小功率计性能检测方法
Test methods of laser power meter in lower-range
电能表检验装置
Testing equipment for electrical energy meters
标准电容箱
Standard capacitance boxes
