当用激光扫描显示器时，发现视觉调节量不断增加，但影响的强度由显示器扫描速度来界定。
Increased variability of the level of accommodation was found when using the laser-scanned display, but the magnitude of the effect was mediated by how fast elements of the display were moving.
过去，针对零售商的店内技术包括传统的前端销售点（即收银机）、关联的收据打印机、扫描仪和显示器。
In the past, the in-store technology focus for retailers included the traditional front-end point of sale (that is, cash register), associated receipt printers, scanners, and displays.
没有IMP20，操作人员就需要扫描几个显示器。
Without the IMP20, an operator would need to scan several screens.
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