Photography can be a straight forward process, point and click, with no contact, the method of scanning works in a completely different way.

摄影可以是一个纯粹的过程，只要按下快门而无须任何接触，但扫瞄则是一种全然不同的方式。

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A laser scanning non contact measuring method and a measuring system for the roundness errors of large sized rotating parts are presented.

利用激光狭缝扫描原理和光电传感技术，提出了一种用于测量大型回转体类零件圆度误差的激光扫描非接触测量方法和测量系统。

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Based on laser-scanning measuring technology, a laser non-contact measuring method of arm diameter for crankshaft and a measuring system by using the laser scanning principle are presented.

基于激光扫描检测技术，现采用激光球面反射扫描原理，提出了一种曲臂两臂轴径的激光非接触检测方法和测量系统。

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