Through the analysis and study on crushing system of Yongping Copper Mine, and combined with the production condition of crushing equipments, three transform plans are pointed out.
通过对永平铜矿选矿厂碎矿系统存在问题的分析与研究，并结合碎矿设备的具体条件，提出了三个技术改造方案。
Objective To study the characteristics of the procedure of medical equipments purchase.
目的：研究医疗设备采购活动的特征以及行业采购的特性。
The study, exploitation and application of the soluble plastic packing product and its production equipments are discussed systematically. The future investigation concerned is also expounded.
系统地论述了水溶性包装薄膜产品和生产设备的研究、开发及其应用现状，同时论述了水溶性塑料薄膜今后的研究课题。
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