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The required amount of time that current flows in the joint is determined by material thickness and type, the amount of current flowing, and the cross sectional area of the welding tip contact surfaces.

所需的时间，目前的流动，联合，取决于材料的厚度和类型，电流流动量的，以及横截面积焊接提示接触面。不太通顺··见谅

The items of Zernike polynomials have corresponding meanings of Seidel aberrations. The method of using Zernike polynomials to fit optical surfaces has been widely used in project, optical design software and interference check.

由于Zernike多项式的各项与光学像差有相应的对应关系，用Zernike多项式对镜面面形数据进行处理的方法已经广泛应用于工程项目、光学系统设计软件和干涉检查等。

The self-centering mechanism design of bipolar endoprosthesis has advocated the use of offset centers of rotation between the inner and outer joint bearing surfaces to generate a self-centering moment on loading to prevent impingement of polyethylene rim and stem neck or cup fixed at wrong place. The design was used popularly, but the function of self-centering mechanism was discussed in very few papers. Three bipolar endoprosthesis were evaluated: UNIQHIP system, UHR system, and AML system.

双极式半人工髋关节的离心复位机构，是利用髋臼外帽的球心与股小球的球心两者在不同点，来防止发生髋臼外帽固定於髋臼中某角度卡住不动，而使股骨柄颈部固定磨损超高分子聚乙烯内衬之一边缘，进而加速超高分子聚乙烯内衬之磨耗，造成骨溶蚀与人工髋关节的松脱。

Most research on self-cleaning is done with different surfaces.

多数的自我实现的研究有不同的表面进行清洁。

The acorreding mathod is presented to solute the defficulty of the directly transfering coating technique under self-hardening conditions,and the process obtains the propose of short time,low cost,smooth surfaces and accurate sizes.

采用CO2水玻璃硬化背砂的铸造工艺及在自硬条件下涂料直接转移技术的工艺难点。

For the semifinished solid-wood furniture,this paper studies and discusses the methods and tevels of sand-paper-polishing and methods and procedures of processing wood surfaces in order to ochieve the best results of painting furniture .

对实木家具白坯件砂光的方法，程度及表面的处理方式进行了探讨，使实木家具的油漆达到了最佳效果。

The menisci are two semilunar, fibrocartilaginous disks located between the medial and lateral articular surfaces of the femur and tibia in each knee.

半月板为膝盖中股骨胫骨间两个分别位于内侧和外侧的半月形的纤维软骨盘。

In this dissertation, we study a variety of materials , from conventional semiconductor, organic semiconductor to semimetal, adsorbed on transitional metal surfaces.

本 论文对二维新型材料（从有机半导体、无机半导体到新近发现的半金属graphene）进行了第一性原理研究，研究涉及的材料物性包括几何构型、电子结构等方面。

Based on the hierarchical express of tool and workpiece, overlapping test between OBBs and octants of the surfaces octree with the separation axis theorem is implemented.

在对主轴头、刀具体和被加工工件进行层次化近似表示的基础上，运用分离轴理论实现了对主轴头及刀具体包围盒和工件八叉树节点之间的相交测试。

Statistics were made on the shape of 150 glaciogenic gravels at diameter from 5-15 cm and with one or more stria surfaces, of mainly medium-grained granite and a few sericite schist.

有些作者的工作表明，冰碛中的砾石随搬运距离的增加，其磨圆度和球度的提高是明显的1、2'；还有人用A。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。