Using the cultural heritage data method, researched the social characteristic of the waist drum of Ansai to bring up the course speculation development.
运用文献资料法，对安塞腰鼓的社会特性和功能价值在高校教学中的可行性进行分析研究。
This paper briefly introduces the whole design thought of the new-type vacuum filter and the design and development of some main structure parts: rotary-drum and back-flushing valve.
简要介绍了新型真空过滤机的整体设计思路及其主要结构部件转鼓和反吹阀的设计研制。
My company is committed to the laser printer drum unit, compact and copier drum frame, the research and development and production of the powder compact.
我公司致力于激光打印机硒鼓、粉盒和复印机鼓架、粉盒的研发与生产。
My company is committed to the laser printer drum unit, compact and copier drum frame, the research and development and production of the powder compact.
我公司致力于激光打印机硒鼓、粉盒和复印机鼓架、粉盒的研发与生产。
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