DEVIL
发表于 2025-3-25 04:48:22
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纵欲
发表于 2025-3-25 09:20:00
The City: Pop Art and Brutal Architecture,e general form:.where . is the rate of heat conduction in the n-direction, and . is the temperature gradient in that direction. The partial derivative is used since there may exist temperature gradients in other directions. One-dimensional conduction does not often occur in practice since a body wou
圆桶
发表于 2025-3-25 14:22:03
https://doi.org/10.1007/978-1-349-11945-5 of edge and corner effects which must be present in any finite object. The error involved in this neglect will depend on the dimensions of the system. Consider, for example, the wall of a building some 6 m long and 200 mm thick. In the absence of doors and windows, conduction through such a wall wi
PANIC
发表于 2025-3-25 17:16:31
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啤酒
发表于 2025-3-25 23:10:03
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空气传播
发表于 2025-3-26 03:05:16
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fibroblast
发表于 2025-3-26 05:01:42
Claudio Becagli,Matilde Milanesing it is another important example of convection. Fluid motion is due entirely to buoyancy forces arising from density variations in the fluid. There is often slight motion present from other causes; any effects of these random disturbances must be assumed negligible in an analysis of the process. N
并置
发表于 2025-3-26 12:17:01
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Recess
发表于 2025-3-26 16:29:00
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HAWK
发表于 2025-3-26 17:06:12
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