... 速度水头 velocity head 速度伺服系统 rate servo system 速度特性 speed characteristics ...
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The manufacture precision of super exactitude NC lathe depends on not only the operation rate of NC deviceand joined precision, but also the error of track and point location about servo system.
超精密数控车床加工精度的提高不仅依赖于数控装置的运算速度和曲线的拟合精度，同时还依赖于伺服系统的跟踪精度和点位控制精度。
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