The geological situations of sulphide Cu-Ni and Pt mineral resources in Yunnan are shown clear by the various geological investigation, prospecting and exploration in more than 40 years.
历经40多年的各种地质调查和普查勘探，云南硫化物型铜镍和铂族矿产的地质情况已比较清楚。
By microstructure analysis the evolutive characteristic of structure of rapidly solidified Cu Zn alloy in different temperature preservation was initially made clear.
通过金相组织分析，初步摸清铜锌合金快速凝固组织在不同温度下保温组织演变的特点。
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