When it's cold out, cover your Windows with plastic and shrink-wrap them by using a hairdryer to heat the plastic at its edges.

当室外寒冷时，用塑料布和收缩膜遮起来，用吹风机在四周把塑料吹热。

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But checked Chad engineering core column is fixed with aluminum alloy column, so will lose freedom scale effect, when heat bilges cold shrink large internal stress.

但是被检查的工程芯柱都与铝合金立柱固定，这样就会失去自由伸缩作用，当热胀冷缩时产生较大的内应力。

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