求翻译：高速切削加工时，表面质量的变化规律与普通切削不同，为了减小加工表面粗糙度值，选择合理的切削速度和进给量，并选择不同材料的刀具进行切削实验，根据实验结果进行分析研究。是什么意思？

High-speed machining, the variation of the surface quality with ordinary cutting, in order to reduce the surface roughness value, choose a reasonable cutting speed and feed rate, and select the tool cutting experiments of the different materials, in accordance with the experimental results analysis

High-speed milling, surface quality, the pattern of changes and ordinary cutting different, in order to reduce processing surface roughness value, choose a rational cutting speed and feed volume of knives, and to choose different materials experiments carried out in 3300 in accordance with experimen

When high-speed cutting processing, the surface quality change rule and the ordinary cutting is different, in order to reduce the processing surface roughness value, chooses the reasonable cutting speed and to feed quantity, and chooses the different material the cutting tool to carry on the cutting

When high speed machining, surface quality variation and common cuts of different, in order to reduce the surface roughness value and choice of appropriate cutting speed and feed rate, and select the tool for cutting experiment with different materials, based on the analysis of experimental results.