零点偏置（Zero Offset），数控系统的一种特征。它容许数控测量系统的原点在指定范围内相对于机床零点移动，但其永久零点则存在数控系统中。
以曲轴箱体为数控加工对象，讨论多工位工件坐标系的建立和零点偏置值的计算。
Uses crank box as objects in NC machining, and discusses the establishment of coordinate system and the calculation of deviation value of multiple work position workpiece.
仪器的零点读数也会随着环境温度的变化而变化。这种效应通常称为电压偏置温度系数。
The zero reading may also vary as the ambient temperature changes. This effect is usually referred to as the temperature coefficient of the voltage offset.
电光相位调制器是数字闭环光纤陀螺系统中的关键部件，主要用于产生偏置相移，使整个闭环系统始终工作在零点附近。
Electrooptic phase modulator is critical part in digital closed-loop FOG system, the function of which is to create bias phase, so that to make FOG working around zero point.
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