REFER TO6.2, TO CHECK UP WHETHER THE SAMPLES HAVE FOG, PAINT, OR OTHER FILTH AT THE INSIDE SURFACE, WHETHER THE GLASS AND GLUE BAR MOVED DISORDER.

• 按照6.；2观察试样的内表面有无雾状、状或其他污物，玻璃是否有明显错位、条有无蠕变。