The formation mechanism and influencing factor of the duplex structure have been studied.
探讨了这种复相组织的形成机理和影响因素。
The results show that the duplex structure ductile iron is a good abrasive-resistant material.
试验结果表明，这种复相球墨铸铁材质是一种优良的抗磨材料。
The results showed that the passive films possessed duplex structure consisting of an outer hydroxide and an inner oxide.
实验表明，表面钝化膜形成外层为氢氧化物和内层为氧化物的双层结构。
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