氧化铍在表面的覆盖来源于真空中残余氧气在样品表面的化学吸附，从而导致了铍的择优氧化。
The coverage of BeO on the specimen surface came from the preferential oxidation of beryllium due to the occurrence of residual oxygen in the vacuum system.
并模拟实际固化温度历程，采用测定不同固化阶段样品残余反应热的方法对固化反应动力学方程进行了验证。
By simulating practical temperature procedure of curing, the cure kinetic equations were verified by means of determining the residual heat of reaction of samples with different cure degrees.
结果表明，形成网格状裂纹的原因是，在镀铬前，样品表面局部区域就存在一些微裂纹及较高的残余应力。
The results show that the reason of developing cross flaw is some micro-cracks on the local area and high residual stress in the early of chrome-plating of the samples.
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