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。
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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