Glass and ceramics also have high volume resistivity, but poor surface properties at high humidity and often-poor piezoelectric properties.

玻璃和陶瓷也具有很高的体电阻率，但是在高湿度下表面电阻率性质较差，并且其压电性常常也较差。

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A wafer with poor surface quality has hidden risks of stress concentration and little cracks, which would cause a huge damage of bursting crack when dicing the wafer.

表面质量不好的晶圆会存在应力集中、裂缝等隐患，在分割晶圆片时，会导致晶圆崩裂的巨大损失。

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In Cornwall, the A39 at Perranarworthal is closed in both directions because of flooding and a poor road surface.

BBC: St Asaph: Woman's body found inside flooded home

Pitch inspector John Jameson made it clear there was no question of him reporting the surface, citing swing and poor batting for most of the wickets.

BBC: Wickets tumble at cloudy Taunton

Although it has reopened, some parts of the road surface were reported to be in a poor condition, BBC Travel said.

BBC: A39 in Cornwall reopens after river bursts banks