We kept this task because we wanted to see if scan patterns were significantly different in china than north america 我们保留了在北美研究时所使用任务的目的是为了看下是否这些人的搜索模式与在北美的中国人的有根本性差异。
This compact , hands - free scanner is designed with a dense 20 - line omnidirectional scan pattern that helps provide fast , efficient throughput with a high first - pass read rate 它设计紧密,操作方便,具有20条激光线密布而成的全向扫描区域,扫描快速而高效,并具有较高的一次扫描通过率。
Horizon is metrologic s next generation in - counter laser bar code scanner . this compact , hands - free scanner is designed with a dense 20 - line omnidirectional scan pattern that helps provide fast , efficient throughput with a high first - pass read rate 它的设计紧凑,操作方便,能形成一个由20条激光扫描线密布而成的全向扫描区域,扫描快速而高效,并且具有较高的一次扫描通过率。
Abstract : in this paper , a ray - optics analysis is performed to investigate the asymmetry of dual beam scanning field produced by a rotating polygon . some basic equations of dual beam scan are derived , such as , the position vector for the incident point , the scalar expression for reflected ray , scan pattern on observation plane ect . the far - field asymmetry of the scanning field has been discussed 文摘:应用几何光学理论研究了多光束转镜扫描场的非对称性,导出多光束扫描入射点位置矢量、反射线标量表达式、观察面上的扫描轨迹方程,并研究了扫描远场的非对称性。