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Plate and hollow sunshine board, 8 mm and 10 mm thickness.
判定板和中空阳光板，8毫米和10毫米厚度。
youdao
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The stress and strain in the board changes in the direction of thickness.
板壳内的应力应变场沿厚度方向变化。
youdao
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The stress and strain in the board changes in the direction of thickness.
板壳内的应力应变场沿厚度方向变化。
youdao