Precision ball screw unit is the key part of NC machine, and its manufacturing level determines the precision level of NC machine to great extent.
精密滚珠丝杠副是数控机床的关键功能部件，其制造水平的高低在很大程度上决定了数控机床的精度高低。
Compared with other simulation technique, neural network response surface method can greatly reduce the simulation time at the same precision level.
同其他模拟技术相比，在精度相同的情况下，神经网络响应面法可以大大减少模拟时间。
Compared with other simulation technique, neural network response surface method can greatly reduce the simulation time at the same precision level.
同其他模拟技术相比，在精度相同的情况下，神经网络响应面法可以大大减少模拟时间。
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