scan width

The accuracy in spectral measurement, for instance, photometric accuracy ( transmittance or reflectance), wavelength abscissa accuracy and spectral resolution, is usually influenced by spectral instrument factors, such as slit width, scan speed and response time.

光谱仪器测试参数，如狭缝宽度、扫描速度和响应时间等对光谱测试精度例如测光精度（透过率或反射率）、波长精度和光谱分辨率等有很大的影响。

Besides, the width of kerf would decrease when the number of pulse reduces and the speed of laser scan increase.

且有效脉冲数的减小或扫描速度的增加，切缝宽度会随之减小。

Gradient represented the variety of gray and gradient is also much bigger at gray acute variety area. Line scan can search the lines of the image element point width.

梯度体现了灰度的变化，灰度变化越剧烈梯度越大，线扫描可以检测出一个像素宽度的线。