This paper gives an analysis of the present state of CNC machine, and describes its developing tendency.
对数控机床的现状进行分析，并指出了数控机床的发展趋势。
This paper analyses its basic components, its characteristics and differences from the traditional measuring instruments. It also takes an outlook at its developing tendency and further application.
本文阐述了虚拟仪器的基本组成、特性及其与传统测量仪器的不同，分析了虚拟仪器的现状，并展望了今后的发展趋势和应用领域。
The extractions of collagen from tannery wastes by acid, alkali, enzyme, oxidation etc were introduced. The application of collagen fiber in papermaking and its developing tendency were also analyzed.
介绍了采用碱处理法、酸处理法、氧化法、酶处理法等从皮革废弃物中提取胶原蛋白的几种方法，还介绍了这些胶原蛋白在造纸中的应用现状及发展趋势。
The extractions of collagen from tannery wastes by acid, alkali, enzyme, oxidation etc were introduced. The application of collagen fiber in papermaking and its developing tendency were also analyzed.
介绍了采用碱处理法、酸处理法、氧化法、酶处理法等从皮革废弃物中提取胶原蛋白的几种方法，还介绍了这些胶原蛋白在造纸中的应用现状及发展趋势。
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