依冷凝速率梯度不同，该组成样品可以获得显微结构渐变的熔融材料。
The cooling speed gradient leads to a gradually changed microstructure of the fused materials.
通过在某个地方冷却筒体，而这个地方是建立固体喂料、固体床，进而开始熔融的地方，这个梯度就这样进一步影响喂料速率。
That gradient further affects the feed rate by cooling the barrel in the location where it's critical to develop solids feeding, solids-bed compaction, and heat to initiate melting.
反应速率受试样中氧浓度梯度的限制。
The reaction rate is limited by the concentration gradient of oxygen in the sample.
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