It is now necessary to introduce a sign convention for radiiofcurvature.
现在必须介绍曲率半径的正负号规则。
2
The radiiofcurvature are generally large in order to achieve adequate range of vision.
半径曲率一般都是大，以达到足够的视线范围。如此庞大的半径也有可取的审美原因。
3
The analysis results in the paper indicate that the effect of the curvatureradii should be reckoned in the analysis of the vehicle-bridge coupled vibration about the continuous curved girder Bridges.