Plastics piping systems - elastomeric - sealing - ring - type socket joints for use with unplasticized poly vinyl chloride pipes - test method for leaktighness under internal pressure and angular deflection 塑料管道系统硬聚氯乙烯pvc - u管材弹性密封圈式承口接头偏角密封试验方法
Of course , the ancient rishis were aware of the tropical , season - based cycles of northern and southern declination paths of the sun and used them also when appropriate 当然，古代的印度圣哲是知道热带的，在适当的时候也使用以季节为基础的太阳偏角（太阳赤纬）南比变化周期。
The zhengyu pkc type sprinkler pipe adopt aluminum tubing with large deflection angle quick assembles coupling use for complex landform transport water and sprinkle Pkc型球接头移动喷灌管道，采用薄壁高强铝合金管，配套大偏角、镀锌钢制球接头，具有偏转角度大，密封性能好，方便移动，快速安装的特点。
Then the math model of the relationship between the front wheel aligning parameters and tyre wear is obtained by taking the side slip angle of tyre as medium parameter , and the computer simulation is made 并以轮胎侧偏角为中间变量，建立了前轮定位参数同轮胎磨损之间关系的数学模型，进行了计算机仿真计算。
Experimental results show that in the condition of rapid movement , smaller objects and larger deflection angles between camera and planar body , the algorithm could guarantee the tracking accuracy and robustness in a certain extent 实验结果证明，在平板图案发生快速运动以及目标图案较小或者平板与摄像机平面偏角较大的情况下，该算法能在一定程度上保证跟踪的准确度和健壮性。
The method to correct the declination error of uav geomagnetic heading with gps and igrf is proposed , by means of which the true heading of the craft can be obtained with magnetic sensor in global scope 提出了基于gps ( globalpositionsystem )和igrf ( internationalgeomagneticreferencefield )的无人机磁航向地磁偏角修正方案，使无人机能够在全球范围内利用磁传感器获得子午线航向。
This thesis uses fuzzy changing the gain proportion guidance to control the yaw angle v and the pitching angle , and to realize following track , with the predetermined track , which had been designed by hierarchical track planning with voronoi diagram 本文在利用voronoi图的分层航迹规划,规划出预定航迹,并利用模糊变增益比例制导律控制导弹的偏角v和弹道的倾角,实现航迹跟踪。
Whereas , vdsc operates on physical limits of large vehicle slip angle and lateral acceleration , and enhances vehicle lateral stability by utilizing the additional yaw moment produced by different adhesion forces acted on the right and left side wheels 而vdsc系统主要在车辆大侧向加速度、大侧偏角的极限工况下工作，通常利用左、右两侧车轮附着力之差产生的横摆力矩来达到稳定性控制目的。
Based on geometry alignment data and speed difference , by stat . formula are established about the relation between downgrade , curve radius and deflection and speed change . then method to establish speed characteristic curve is present 依据样本路段的几何线形数据和速度变化特征，利用统计手段得出了纵坡坡度、平曲线半径和偏角等线形指标与速度变化之间的关系公式，根据这些公式，给出了一定线形组合求解速度特征曲线的方法。
A new model was presented in a three dimensional geographic coodinate system to describe the linear growth of r - t instability so that the effects of magnetic inclination and declination were taken into accont . it is an generalization of former theories from equatorial to mid - latitude regions . from this model one can see the influence of magnetic strength , inclination and declination . due to the magnetic effects , the occurrence rate of the instability is not symmetric in longitudes even at the magnetic equator . some occurrence peaks or valleys will appear in certain places around the world 从三维地理坐标系出发建立模型，考虑了地磁倾角和偏角的影响，研究spread - f现象的全球分布特点，是对以前的研究从赤道地区向中低纬度地区的推广。从该三维模型中可以看到地磁场的大小和位型的影响包括磁倾角和磁偏角的效应。由于地磁位型的不同，发生率的分布并不具有经度对称性，即使在磁赤道附近也如此。
