... 温度随时间的变化 temperature history 温度的空间梯度变化 TG 垂直方向的温度变化 vertical temperature variation ...
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空间有限元分析表明，预应力混凝土箱梁的应力和变形对温度梯度模式的变化较为敏感。
The space finite element analysis indicated that the prestressed concrete box girder's stress and the distortion are sensitive to the change of gradient of temperature pattern.
模型边界的温差变化表现了温度场的空间梯度，越大的边界温差需越高的计算阶数。
The temperature difference variation of model boundary shows the space gradient of temperature field, and the larger boundary temperature difference requires higher order.
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