该方法以计数器法测取脉冲的主体宽度，用时间-电压转换法测取脉冲的零头时间，并以此作为量化误差的校正值。
In this method the main part of the pulse width is measured by counter, and the odd of the pulse width is measured by time-voltage conversion method.
本文提出一种新方法——密度矩和法，用底片上已知亮度恒星的PDS测微密度数据来同时决定底片特性曲线和星等零点。
A new method is suggested for determining the characteristic curve of a plate, as well as the magnitude zero point, using PDS microdensitometer data of stars of known brightness on the plate.
本文基于光学三角法测量原理，设计了一种通过改变光平面与成像光轴夹角来实现对视场内被测零件表面扫描的视觉测头。
A novel noncontact scanner that scans the inspected part's surfaces by changing the Angle between laser plane and optical axis is designed based on optical triangulation.
因此提出了一种改进的过零检测算法：零点斜率测频法。
An improved method which measures frequency through the slope of zero based on the cross-zero detecting is presented.
因此提出了一种改进的过零检测算法：零点斜率测频法。
An improved method which measures frequency through the slope of zero based on the cross-zero detecting is presented.
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