查询词典 principal axis

The worm hole is a magical point, that is defined by the intersection of the axis of rotation of the u-joint shaft with the axis of steer.

该蠕虫洞是一个神奇的一点，就是确定的十字路口的旋转轴U型联合轴与轴的指导。

The important thing to know that it has an axis of symmetry — the optical axis.

重点是知道主镜有一个对称轴——光轴。

Application of both finite element and combined strip element to axis symmetry problems;2. Basic definition of axis symmetry has been given with three specific examples.

通过三个例子讲述了折叠矩形后满足轴对称的基本定理，并分别从折叠一次、两次介绍了折叠型的解题方

Then the problem is further equivalent to a kind of Riemann boundary value problem on the real axis by extension of symmetry with respect to the real axis.

利用已有结果得到了该问题的可解性定理。

Based on traditional magnet circuit anglicizing way and permanent magnet drawing and by using traditional BLONDEL theory, A model for electromagnetic calculation and formulas for voltage are obtained by dealing with the d- axis and q-axis electromagnetic coupling of the double- winding armature reaction.

并在常规稀土永磁同步发电机的磁路分析和永磁体图解法的基础上，利用传统的双反应理论，通过对双绕组电枢反应的d-q轴电磁解耦，推导出双电压复合励磁稀土永磁同步发电机的电磁设计数学模型。

Product brief introduction: GXF is inclined shed fan to be bosomy shape structure, the characteristic with its small imports and exports expedited the velocity of flow of air current, pressure coefficient is tall, shed fan with general axis below the circumstance of equal opportunity order, its discharge pressure all is more than general axis to shed the discharge of fan, pressure.

制品介绍：GXF斜流风机为鼓型构架，其进岀口小的特征加速了气流的流速，压力参数高，同一般的轴流风机一样机号的境況下，其访问数量压力均大于一般轴流风机的访问数量、压力。

The structure is formed by the assemblage of the second building units: cancrinite cage, according to the hexagonal space groups P63/mmc. It has not only the 18-ring pore channel system which parallels to the c-axis as in VPI-5, but also 10-ring pore channel system along both a and b-axis. The results obtained from calculating the bond distances and angles between the...

与VPI-5类似，具有平行于c方向的十八元环直孔道结构，但侧面有十元环孔道，通过计算该结构模型各原子间的键长、键角，认为该结构有可能存在，采用POWD-MODELING程序，计算了它的理论XRD谱图并绘制出其立体拓扑结构。

Two-axis" refers to the central axis and an extension of Chang'an Avenue;"two-zone" refers to the "eastern development belt" and "western ecological belt";"multi-center refers to the construction of urban areas in different functional areas , respectively, to assume different functions of cities in order to improve the efficiency of city services and decentralized traffic pressure, such as the CBD, Olympic Park, the Zhongguancun area, and many other multi-service settings.

两轴"是指中轴线和长安街延长；"两区"指的是"东部发展带"和"西部生态带"，"多中心是指城市建设地区不同功能区，分别承担不同的城市功能，以提高城市的服务效率和分散交通压力，如生物多样性，奥林匹克公园，中关村地区，和许多其他多种服务的设置。

The system consists of four parts such as Data Management of Product Model,Finite Element Analysis, Optimal Design and Graphics Drawing; and its main work is searching for an optimal scheme of chief axis with Sequential Quadratic Programming Method by finite element static and dynamic characteristical analysis of the axis and saving the results of design as documents or outputing them.

系统出产品模型数据管理、有限元分析、优化设计和图形绘制四部分组成。通过对车床主轴二维垂直剖面力学模型的有限元静、动态特性分析，采用序列二次规划的优化设计方法寻求主轴设计的优化方案，并将优化设计结果形成文档或输出。提出产品设计模型的概念，通过它可自动生成有限元分析模型、优化设计模型和图形模型三个子模型，将有限元分析、优化设计、图形绘制三部分结合在一起。

Axis Communications of Chelmsford, Massachusetts, has introduced the AXIS 247S Video Server.

美国马萨诸塞州Axis Communications推出AXIS 247S视频服务器。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。