转子式流速仪
Rotating-element current-meters
Rotating-element current-meters
Instruments for stage measurement-Part 5 : Electronic gauge
Instruments for stage measurement-Part 2 : Pressure-type stage gauge
Instruments for stage measurement-Part 4:Ultrasonic stage gauge
Determination of steady-state thermal transmission properties of thermal insulation-Spherical method
Instruments for stage measurement-Part 3:Groundwater stage gauge
Instruments for stage measurement Part 6 : Remote measuring stage gauge
Instruments for stage measurement-Part 1:Float-type stage gauge
Friction linings for industrial and agricultural machines
Concrete and reinforced concrete sewer pipes