直线和圆弧插补往往很难连接到控制单元。
Linear and circular interpolation are often hard-wired into the control unit.
研究了逐点比较法，并编制了平面的直线插补和圆弧插补程序。
Study the dot-comparison in pulse increment and develop the line and arc interpolation.
直线插补采用梯形曲线模式，圆弧插补采用李沙育图形原理。
The line interpolation adopts trapezium mode, and the arc interpolation adopts the principle of Lissajous Pattern.
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