This paper presents formula to calculate the scanning frequency, scanning Angle, scanning width and excessive focal length of the wide-band laser scanning device.
介绍了激光宽带扫描装置，提出了多棱镜宽带扫描的扫描频率、扫描角度、扫描宽度、过剩聚焦长度的解析式。
This kind of device employs advanced laser scanning measuring technique, which can measure automatically the coal storage in the open coal yard without necessity of shaping coal pile beforehand.
它采用先进的激光扫描测量技术，可以在不对煤堆进行事先整形的情况下自动测量出大型露天煤场的存煤量。
The invention discloses a dichroic laser scanning type medical purpose vein display device.
本发明公开了一种双色激光扫描式医用静脉显示装置。
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