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Based on the geometry constraint and dimensiondriving technique, a 3-UPU parallel simulation mechanism is created. Then a 3D free surface and a guiding plane of tool path are constituted, with the 3-UPU parallel machine tool combined, a novel 3-UPU simulation parallel machine tool for machining a 3D free surface is created.

通过几何约束和尺寸驱动技术，先建立3-UPU并联模拟机构，再构造任意3D自由曲面和刀具轨迹的引导平面，与3-UPU模拟并联机构合成，得到用于加工任意3D自由曲面的模拟并联机床。

Based on the geometry constraint and dimension-driving technique,a 3-UPU parallel simulation mechanism is created.Then a 3D free surface and a guiding plane of tool path are constituted,with the 3-UPU parallel machine tool combined,a novel 3-UPU simulation parallel machine tool for machining a 3D free surface is created.

通过几何约束和尺寸驱动技术，先建立3-UPU并联模拟机构，再构造任意3D自由曲面和刀具轨迹的引导平面，与3-UPU模拟并联机构合成，得到用于加工任意3D自由曲面的模拟并联机床。

The CNC grinding path generation algorithm and software are developed for the eight-axis CNC cutting tool grinder with five-axis simultaneous axes. The result of simulation shows that the algorithm is corrected and the software can be used in the practical production through the further work.

本文的研究工作及磨削加工算法，针对八坐标五联动数控工具磨床进行了软件开发，通过仿真结果验证了理论研究工作及加工算法的可行性，对于螺旋刃刀具数控加工具有一定的理论意义和实用价值。

When they landed at Frankfurt he was handed back his suitcase. He beat a straight path to the men's toilet, opened the case, and found only old clothes.

当他们到达法兰克福后，他拿回了手提箱，径直走进了男洗手间，打开了箱子，但是他发现里面只有些旧衣服而已。

To research on quantitative relations between neutral aroma constituents and concentration and quality of aroma of flue-cured tobacco in Panxi tobacco-growing areas, and to offer a new and impersonality method of flue-cured tobacco quality assessment, the authors carried out partial correlation analysis, path analysis and stepwise regression analysis, and established mathematics model and studied the factors of neutral aroma constituents affecting concentration and quality of aroma of flue-cured tobacco in this paper.

为了探究攀西烤烟烟叶中性致香成分与香气质和香气量的定量关系，并为客观准确评价烟叶质量提供新方法，该文采用偏相关分析、通径分析和逐步回归的分析方法，建立数学模型，研究了影响烤烟香气质量的中性致香成分。

In image processing part of ESPI, time stepping quadrature phase shifting method, direct correlation method, noise reduction median filter, and path-independent phase unwrapping method were all integrated to reconstruct surface profile of specimen.

在电子斑点影像处理方面，本研究以相关系数演算法结合时进正交相移法计算出相位主幅角、以中位数滤波法进行滤波、以路径独立之演算法完成相位重建工作，最后以多项式曲面拟合的技术完成物体完整的变形轮廓。

It is a 2 hour walk (8 km) from the ticket booth to Baekdamsa Temple on the valley path.

从售票处沿溪谷到百潭寺，步行需2小时左右（约8公里）。

The most recognisable type is the returning boomerang, which is a throwing stick that travels in a elliptical path and returns to its point of origin when thrown correctly.

有多种形状。最常见的就是能返回的，它以类似椭圆的轨迹进行飞行，并返回到最初的投掷点。

Established path is permanent and fixed, through multiple network switch nodes.

建立的连接是永久的，固定的，通过多个网络交换节点。

With the four axis motion system, a three-step scanning method is used to determine the scanning path automatically.

在研制的四轴线结构光扫描系统平台上，提出了一种三步扫描数据补偿路径自动规划方法。

Now she was hungry and angry.She began to smoulder.

现在她又饿又气，她开始流露难以抑制的怒火。

You have placed our iniquities before You, Our secret sins in the light of Your presence.

诗90：8 你将我们的罪孽摆在你面前、将我们的隐恶摆在你面光之中。