精密滚珠丝杠副是数控机床的关键功能部件，研究高精度的丝杠螺距精度动态测量方法和仪器组成具有重要的理论意义和实际应用价值。
Studying the means and the apparatus composing in high precise dynamic measure of screw-pitch error have important academic meaning and practical applied value.
用本方法可以快速地选择挂轮和螺距，达到了较高的加工精度，在生产中具有实际意义。
In this new way, a group of change gears and pitch can be selected and higher machining accuracy obtained. It is practical in production.
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