3 MOVE THE DEW-POINT METER AND IMMEDIATELY CHECK UP THE INSIDE SURFACE OF INSULATING GLASS HAVE NOT ANY DEW OR FROST.
3 MOVE THE DEW-POINT METER AND IMMEDIATELY CHECK UP THE INSIDE SURFACE OF INSULATING GLASS HAVE NOT ANY DEW OR FROST.
3移开露点仪，立刻观察玻璃试样的内表面上有无结露或结霜。