bottom subsidence

基本解釋

The subsidence of the bottom and the cracks in the middle of the bottom are caused by temperature gradient and melt gravity during crystal growth.
晶體生長(zhǎng)期間，溫度梯度和熔體重力引起的熱應(yīng)力和壓力應(yīng)力使坩堝底下陷并在底的中部產(chǎn)生裂隙。
The ring wall base resulted in sudden change of stress and formed steep subsidence zone at the ring wall on soft ground base, being unfavorable to stress at the bottom of the tank.
其次，當(dāng)罐直徑越來(lái)越大時(shí)，混凝土環(huán)墻的溫度應(yīng)力和干縮成為設(shè)計(jì)難題。