查询词典 principal angle

To the femoral neck fracture with neck-shaft angle of less than 135 degree, the fixation with the entry angle of less than 135° can make the neck-shaft angle rising, meanwhile, lag screw's location is easier to trend to the inferior of femoral head, displacement and angle between fracture surfaces satisfy the demand of functional reduction or extroversion reduction, and a satisfied stability is performed in biomechanical test.

对于颈干角小于135°的股骨颈骨折，以低于135 °的进钉角度固定时，能增大颈干角，同时拉力螺钉的位置更容易偏向股骨头颈的中、下部，骨折端的位移、成角也能够符合功能复位的要求，在力学测试中表现出较好的稳定性。

The precision of electronic angle gauge is 1Π 7 000 and the total error of Bitterlich angle gauge is 1Π 32. S o the precision of the electronic angle gauge is 200 times as high as general angle gauge and its velocity is higher.

经过分析，电子角规测树精度为1/7 000，而比特利希角规测树精度总误差达1/32，电子角规的测树精度比普通角规高出200倍以上，其速度也较快。

When measuring, based on the segmented contour line of thread, we used the compiled measurement program to calculate and measure the geometrical parameters of the internal taper thread as pitch, half of thread angle and taper angle. Precisions of pitch, half of thread angle and taper angle reached ±0.012mm,±0.17° and ±0.018°. The results satisfied with the technique requirement of production. The reason of error was analyzed.

在测量尺寸时，使用自编程序计算测量内螺纹的螺距、牙型半形及锥角，测量精度分别达到±0.012mm、±0.17°和±0.018°，满足产品的技术要求，并分析了误差产生的原因。

a system of along-track mode sar based on the gps is established.by seeing the gps signal as a chirp,chirp scaling algorithm of this mode with large squint angle is investigated.chirp scaling algorithm is considered more efficient and widely applicable when the bistatic sar system is in side-look or small squint angle mode,but in large squint angle case,the errors caused by taylor expansion are so large that the algorithm could lose its precision.in such a case,an equivalent mono-static sar range mode which has fewer errors than taylor expansion with large squint angle is proposed to substitute the range history of bistatic sar.then bistatic sar images with large squint angles are gotten by common nonlinear cs algorithm.the effectivity of the method is verified by matlab simulation.

摘 要：建立了基于gps的顺轨sar系统模型，通过将gps信号等效为chirp信号，研究了在该模式下的大斜视角chirp scaling算法。在正侧视或小斜视情况下，cs算法具有较好的聚焦性能和广泛的适用性，但在斜视角较大的情况下，该算法将散焦而不能成像，因而提出了用等效的单基地距离模型来代替双基地距离历史的方法，解决了大斜视角情况下距离模型二阶近似误差较大的问题，并结合单基地非线性cs算法，实现了在大斜视角情况下的基于gps反射信号的双基地sar高精度成像，最后通过matlab仿真进行了验证。

At the peak point of backward swing, the vertical height from the center of the ball to the ground was 1.34 ±0.01 meters, the angle of the shoulder was 82 ± 2.5 degrees and the angle of the elbow was 161.35 degrees. During release, the vertical height was 0.13 ±0.01 meters, the angle of the shoulder was 48.00 ± 3.64 degrees and the angle of the elbow was 160.71 degrees.

所得具体结果如下：在后摆最高点时，球体中心点距地面之垂直高度平均为1.34 ±0.01公尺，肩关节角度为82 ± 2.5度，肘关节角度为161.35度；而在出手瞬间球体中心点距地面之垂直高度平均为0.13 ±0.01公尺，肩关节角度为48.00 ± 3.64度，肘关节角度为160.71度。

The theoretical and experimental investigations of discus flight indicate the following useful conclusions:the optimum combination of throw angle and discus inclination angle is 35°/26°at zero wind,while 45°is not the best release angle due to the aerodynamic force;different combinations of throw angle and inclination angl...

由于气动力的作用，45°并非铁饼的最佳投掷角度，实验和理论研究表明：无风时35°/26°的投掷角/倾角组合最佳；顺风和逆风投掷必须采用不同的投掷角/倾角组合才能获得当地条件下的最好成绩；铁饼出手时25r/s的自转速度已经可以满足稳定性的要求。

According to the functional requirements of adaptive front-lighting system, the relationships between the yaw angle and pitch angle of light axis in AFS and vehicle parameters, including speed, steering wheel angle and pitch angle of vehicle body are derived, thus a kinematics model for AFS is set up.

根据自适应前照灯系统的功能要求，推导了车辆参数（车速、转向盘转角和车身仰俯角）与车灯光轴沿水平和垂直两个方向的偏转角度之间的关系，建立了自适应前照灯系统的运动学模型。

Feature of principal lines spatial distribution: detect the principal lines through edge detecting technology, and then divide the image of palmprint into blocks with same dimension, compute the mean and variance as feature; Feature of palmprint direction: divide the image into sub-images; compute the max angle of projection and coordinate of each sub-image, which stand for the direction and location of the line on the palm; Feature of moment invariants: compute the moment invariants of each sub-image and the whole image as feature.

掌纹主线空间分布特征：利用边缘检测技术检测出掌纹的主线，将图像分割成相同大小互不重叠的子图，提取每一个子图的均值和方差作为特征；掌纹线方向特征：将图像分成不重叠的子图，利用Radon变换求出每一个子图的最大投影角度和坐标，也就是子图内掌纹线的方向和位置，构造特征向量；掌纹不变矩特征：提取图像整体和分割后的子图的不变矩作为特征。

It first choose a mask with a suitable size in the edge image, the local PCA is performed to obtain the principal direction of the mask. The chosen polar angle in Hough transform is limited in a small range emphasizing particularly on the statistical disciplinarian of all principal directions, so it speed up the search time by reducing the range of .

首先在边缘图像范围中选取合适大小的掩膜，通过局部PCA获得支持集内像素点的主元方向；侧重依据所有掩膜内主元方向信息的统计规律来约束Hough变换的极角选择范围，通过缩小参数选择范围大大缩短搜索时间。

A great quantity of any angle strain rosette readings was gathered in structural test, the principal strain and the principal direction were calculated by computer program written in this paper.

在结构试验中采集得到的成百上千个任意角度应变花的读数，可用本文编写的计算机程序确定其主应变及主方向，从而替代了科研人员大量的手工计算。

"Yes, now you can give yourself airs," she said, you have got what you wanted.

"对了，您现在高兴了，"她说道，这是您所期待的。

Then the LORD said to me: Rebel Israel is inwardly more just than traitorous Judah.

上主于是对我说：＂失节的以色列比失信的犹大，更显得正义。