弧度测量

我国古代的弧度测量

The ancient arc measurement in China

结论：MRI常规门控T1W成像可良好显示主动脉窦，弧度测量有助于窦腔评价；

Conclusion : The sinus of Valsalva could be better shown on T1WI , and the measurements of radian were helpful to evaluate the condition of sinus .

在基于直线测量、弧度测量、角度测量和比例测量等基础上，提出了一种将Farkas测量法与三维激光测量法相结合的颌面三维测量技术。

Based on line measurement , radian measurement , angle measurement and proportion measurement , a new method , which combines both Farkas and three-dimensional laser measurement , is presented for three-dimensional facial measurement .

颈椎生理弯曲的弧度法测量及临床意义

Measurement of the cervical spinal curvature by the method of arc degree and its clinical application

方法：用游标卡尺和自制弧度仪测量129例颈椎各椎体最小高度、冠状径、矢状径和前壁横向弧度；

Methods : Minimal height , coronal and sagittal diameters of cervical vertebral bodies were measured on 129 dry Chinese adult cervical vertebrae .

实验表明本方法的测量精度已到达10-6弧度，角度测量范围大约在-0.0007弧度到+0.0007弧度。

Experimentally , rotation angles were measured with an accuracy of 10-6 radian and the angle measurement range of approximately -0.0007 to + 0.0007 radian .