Many laser measuring devices have setting which shows minimum and maximum dimensions; the operator must merely scan the dot along an edge. This is helpful for taking diagonal measurements.
许多激光测量设备有显示最小和最大尺寸的设定；操作者必须只能沿着边缘点扫描。在测量对角线长度的时候这一点非常有用；
Conclusion:A superior CTVE image depends on optimal selection of the scanning reconstruction parameters, display setting and threshold values, as well as the operator′s experience and skills.
结论：高质量的儿童CTVE图像依赖于扫描重建参数的合理选择、最佳的观察阈值及方位的选择，以及操作者的技巧和熟练程度。
It allows the CNC to "talk" with the operator during setup, verbalizing machine setting and issuing safety advice for secure operations.
它允许数控机床以“对话”的方式与操作员在安装过程，描述计算机设置和提供安全建议方面给予指导。
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