The results show that cryogenic treatment can improve the microstructure and properties of Pb brass.
结果表明，深冷处理能改善铅黄铜的组织和性能。
Compared to the conventional casting, the semi-solid rheological casting can improve the microstructure of the cast.
与液态压铸相比，半固态流变压铸可改善铸件的微观组织。
The results have shown that heat treatment can improve the microstructure of the Al-Si base composite manufactured under case condition.
实验结果表明，热处理能改善铸态下制得的铝硅基复合材料显微组织形态。
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