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Affect the melt flow rate and the cooling speed.
会影响熔体的流动性和冷却速度。
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Fast cooling speed was the main reason of generating cold crackle.
认为冷却速度过快是产生冷裂纹的主要原因。
The impact toughness decreased with decreasing the cooling speed of quench and temper.
结果表明:随着淬火和回火冷却速率的减慢,材料的冲击韧度下降;
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