Scan field

The paper summarizes how many kinds of distortion of e-beam field, exhibits the project and the flow chart of automatic-correction program about the linear distorti-on.

本文通过对扫描电子束曝光机标记信号检测及对准技术的分析,提出了背散射检测电路的设计方案和电路原理图,给出了实验结果;总结了电子束扫描场畸变的种类,给出了线性畸变的自动校正软件的设计方案和流程图;介绍了非线性畸变校正的方法。

The design of a scanning instrument for medical laboratory equipment based on the embedded PC;

基于嵌入式PC的医用检验仪器的扫描装置的设计

Liver Scan using Multiple Detector Spiral CT;

多层螺旋CT肝脏三期增强扫描质量评价的探讨

Laser television with two-beam scanning;

双光束扫描激光电视系统设计

Quantitative selection of nonlinear sweep parameters of vibroseis.;

可控震源非线性扫描参数的定量选取

Sweep technique plays an important role in Vibroseis system,the resolution of Vibroseis seismic prospecting is affected by the shape of the sweep signal′s auto correlation function.

扫描技术是可控震源技术的重要组成部分 ,扫描信号自相关函数的形状是影响可控震源地震勘探分辨率的重要因素。

The varying pitch helixes were constructed on the parameter equation,and were selected as sweep trajectory;the surface of the screw was enveloped on the generating method.

设计过程中按推导出的数学方程构造各段螺旋线,并以该螺旋线作为扫描轨迹,遵循范成法原理包络出螺杆的各段螺旋曲面。