查询词典 surfaces

CNC tool grinding system for grinding tools with complex surfaces.

数控工具磨削系统主要用于磨削加工具有复杂曲面的工具。

This paper is based on the former research taking the No.1 Tong-Lv Bridge as an example; the large universal finite element program Midas/Civil is adopted, a three-dimensional finite element model is established. The static performance, the comparative analysis of influence surfaces, the experimental study and the analysis of a local finite element model of the new style three-span continuous through type bow-string arch bridge is made. With these studies, this paper is aimed at revealing the performance of this kind of construction.

本文在前人研究的基础上，以通吕一号桥为背景，采用空间有限元法对结构形式新颖的三跨连续下承式系杆拱桥的静力性能、影响面比较分析、实桥荷载试验、局部节点分析等进行研究，旨在深入理解该结构形式桥梁的力学性能，为今后相同结构体系桥梁的结构分析提供可以参考的建议。

It is found that the position of vortex shedding is different fro m three-row cylinders. The time-mean pressure coefficient along the surfaces o f the cylinders is not changed with the void friction. But the fluctuating press ure coefficient reduces with the increase of void fraction.

试验结果表明：沿圆柱表面周向的旋涡分离点随着流动向深层发展，并向圆柱的背部移动；圆柱表面沿周向的时均压力系数几乎不随含气率的变化而变化；圆柱表面的脉动压力系数随着含气率的增加而减小。

The elastic deformations of mirror surfaces from three-faced to eight-faced rotating aluminous mirrors were analyzed by 3-D FEM.

分析了从三面体到八面体铝合金转镜镜面变形规律。

ProLink is a thin-bodied lubricant which utilizes Metal Friction Reducer technology-a molecule that bonds to metal surfaces-for smooth shifting and a quiet drive train.

ProLink 是一种稀薄的润滑剂，它利了 MFR技术---分子结合在金属表面，用于顺畅变速和安静骑行。

With considering the heat flux distribution along the direction of the work piece thickness, a modified model of 3-D conical heat source mode is put forward. Though it can be used to calculate the weld width on both the top and the bottom surfaces of the work piece exactly, but for the location and locus of the melt line in the weld cross section, the calculating precision is lower.

考虑到等离子弧热源沿厚度方向分布，本文首先提出了改进的三维锥体热源模式，可以使等离子弧焊缝正面和背面尺寸与实测结果吻合，但焊缝横断面熔合线的走向与实际有较大差别。

A catch (144) associated with the back end of the spring element (140) coupled with the mandrel (56) at the other end cooperates with shoulders on smooth surfaces within the cavities to retain tension within the spring element.

与弹性元件(140)的后端相连的卡子(144)与空腔内光滑表面上的凸肩相协作以保持弹性元件的紧张状态，弹性元件(140)的另一端与心轴(56)相连。

In forward flight, pitch and yaw control is by means of the control surfaces of a conventional tail unit at the end of the tail boom.

在向前飞行，俯仰和偏航控制的手段控制表面的常规尾单位，在年底的尾巴繁荣。

The control lines continue aft through the fuselage bulkheads to the tail wheel, hook, trim tabs and stabilizer control surfaces.

控制线继续尾部通过机身舱壁向尾轮，钩，修剪标签和稳定控制面。

In this study, a commercial CAD/CAM Software is used to plan and generate the multi-axis tool path, and a table rotating/tilting type five-axis machining center is used to perform the experimental machining operation. The material of the die studied is NAK 80 die tool steel, and the geometries are modeled as concave and convex spherical surfaces. Milling parameters considered are spindle speed, feed rate, and different types of cutting tool path. The experimental results show that the surface roughness for concave spherical surface is about 0.247 μm and roundness is about 0.0283 mm and the surface roughness for convex spherical surface is about 0.250 μm and spherical roundness is about 0.0551 mm under the cutting conditions mentioned in this study.

本研究的实验方法与步骤包括利用商用CAD/CAM系统针对实验对象规划三轴/五轴同动加工路径，并经后处理程式转换，在本实验室之平台倾斜/旋转型之五轴加工机上进行实验，实验对象为NAK80模具钢材料之凹与凸球形曲面之加工，此外考虑的切削条件有主轴转速、进给速度、加工路径等，在本研究所设定之最佳切削条件下，凹球形曲面之真圆度约为0.0283 mm，粗糙度为0.247 μm，而在相同切削条件下，凸球形曲面之真圆度为0.0551 mm，粗糙度为0.250 μm。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。