该方法和装置具有对误差源，即，重力、内部摩擦力和操作者干涉(不稳固地保持仪器)而言减小的灵敏度。
The method and apparatus have a reduced sensitivity to error sources, i. e. gravity, internal friction and operator interference (unsteady holding of the instrument).
能使操作者及时发现工件加工中存在的误差，并反馈给数控系统，以改变机床的运动参数，更好地保证加工质量。
It can enable the operator to find the error during part machining and feedback the error to the CNC system to alter motion parameter to ensure the machining quality.
能使操作者及时发现工件加工中存在的误差，并反馈给数控系统，以改变机床的运动参数，更好地保证加工质量。
It can enable the operator to find the error during part machining and feedback the error to the CNC system to alter motion parameter to ensure the machining quality.
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