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Measurement of curved surface having large radius of curvature is a problem for a three coordinates measuring machine.

大曲面的检测对于三坐标测量机是一个难题，以电子经纬仪作为传感器的工业测量是一种新的方法，可以解决这个难题。

Development of a new optical coordinate measuring machine in cylinder coordinates.

基于柱面坐标系的新型光学坐标测量机的研制

To avoid the influence of head position change and to overlap and compare the changing hard tissue under the skull reference system, this work set up a three-dimensional reference frame, which was based on point"S'"(the median point of the upper rear brim of the anterior wall of pituitary fossa), point"Na"and point"Ba"and of which point"S"is origin. UNISIGHT is used to get the original coordinates of all the landmarks in the MPR phase.

为消除矫治前后患者头位变化的影响，使治疗前后变化的上下颌骨和牙列以相对不变的颅底结构作为参照系统进行影像的重叠和对比，本研究通过头颅内的固有标志点S'，N，Ba三点确定了参考平面，建立了以S'点为原点的测量三维坐标系。

A Taylor-Galerkin fractional step method of two steps with the second order accuracy in time and space was developed to deal with the 3-D nonlinear large-amplitude sloshing problem. The calculation coordinates was fixed in the container, and the external excitation was regarded as the mass force.

取与容器固结的坐标系，将外激励视为质量力，针对刚性容器内流体非线性大幅晃动问题，提出了在时间和空间上均具有二阶精度的两步Taylor-Galerkin分步有限元方法。

In order to obtain the 3-D coordinate of maize leaf midrib, field experiment was conducted and 3-D coordinates of 36 plants were collected with 3-D digitzer.

为了获得玉米植株叶片中脉的三维形态，作者采用三维数字化仪测量了36株玉米群体中脉的空间坐标。

It explains texture coordinates, address modes, magnification and minification filters and mip filtering using mipmaps.

它解释纹理坐标，地址模式，放大和缩小的过滤器和MIP过滤使用mipmaps 。

In the study, the measured point coordinates were considered to conform to uniform distribution. Based on the decision rules of minimum condition, the uncertainty property of the reference line and its solution were proposed.

假设测量数据点坐标服从均匀分布，基于最小条件的判定准则，讨论了参考直线的不确定性，并提出了处理方法。

A modal value analysis method is presented to obtain a reduced-order dynamic model with modal coordinates for structures with small damping or without damping.

针对小阻尼和无阻尼结构，提出了一种模态价值分析方法，用于在模态坐标下的动力学模型降阶问题。

And the xyz-coordinates of the two point diffraction sources were calculated by the modified Newton method based on the BFGS algorithm.

它采用傅里叶条纹分析方法来求解干涉条纹的相位分布，运用基于BFGS的拟牛顿算法进行三坐标的迭代计算，确定点光源的三维空间坐标。

And the xyz-coordinates of the two point diffraction sources were calculated by the modified Newton method based on the Broyden-Fletcher-Goldfarb-Shanno alg.

基于傅里叶变换的点衍射干涉测量术是一种建立在点光源衍射干涉理论基础上的测量方法，它采用傅里叶条纹分析方法来求解干涉条纹的相位分布，运用基于BFGS的拟牛顿算法进行三坐标的迭代计算，确定点光源的三维空间坐标。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。