In this paper the advantages of the retrofitting of used machine tools compared with purchase new machine tools are mentioned.

本文指出了机床数控化改造相对于购置新机床具有诸多的优势。

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So as in USA and Japan and the other developed countries, retrofitting of used machine tools has become a new and developing industrial branch in Germany.

与美国、日本等其它工业发达国家类似，在德国机床改造业已经成为一个新兴的工业部门。

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So as in USA and Japan and the other developed countries, retrofitting of used machine tools has become a new and developing industrial branch in Germany.

与美国、日本等其它工业发达国家类似，在德国机床改造业已经成为一个新兴的工业部门。

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