To this end, proposed Yunnan Natural Rubber hot air drying thermal efficiency of technical measures, in order to improve thermal efficiency of natural rubber hot air to provide for references.
为此，提出了提高云南天然橡胶热风干燥热效率的技术措施，为提高天然橡胶热风热效率提供参考依据。
For increasing the utilization efficiency of mineral resources, Yunnan Tin Company Group Limited adopts the filling mining methods for different ore bodies.
云南锡业集团公司为提高矿产资源的利用率，针对不同开采技术条件的矿体，选用与之相适应的充填采矿法开采。
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