gradient porosity
... 梯度孔隙率 gradient porosity 梯度强磁场 gradient high magnetic field 梯度热障涂层 gradient thermal barrier coating ...
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多孔铝合金的孔隙率梯度主要是由渗流驱动压力梯度与凝固顺序所决定，而颗粒的自然堆积密度影响相对较小。
The porosity gradient of porous aluminium is mostly affected not only by the spontaneous stacking density of granules, but also by the infiltration pressure gradient and solidification sequence.
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