求翻译：工件装夹方式在机床确定后，通过确定工件原点来确定了工件坐标系，加工程序中的各运动轴代码控制刀具作相对位移。例如：某程序开始第一个程序段为N0010 G90 G00 X100 Z20 ，是指刀具快速移动到工件坐标下 X=100mm Z=20mm处。究竟刀具从什么位置开始移动到上述位置呢？所以在程序执行的一开始，必须确定刀具在工件坐标系下开始运动的位置，这一位置即为程序执行时刀具相对于工件运动的出发点，所以称程序起始点或起刀点。此起始点一般通过对刀来确定，所以，该点又称对刀点。是什么意思？

Workpiece clamping manner in the machine tool is to determine, through the identification of the datum to determine the workpiece coordinate system, the axis of motion in the processing program code control tool for relative displacement. For example: a program launched a program segment n0010 g90 g

The workpiece clamping method on the machine, the original point by determining the workpiece to the workpiece coordinate system, the process of the Movement shaft code control tool for relative displacement. For example, a program to begin the first part of the program for 0010 N G G 90 00 100 X Z