查询词典 higher arithmetic

The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.

论文的主要工作如下： 1研究了飞机装配型架骨架设计重用技术，在总结归纳骨架线框结构类型的基础上，应用模板驱动的方法建立了骨架线框库，通过骨架线框零件的实例化和离线编辑实现骨架线框的重用，有效利用设计资源，减少重复劳动； 2提出穷举几何对象的装配特征直接获取方法，遍历零件模型的几何对象，从中捕捉所需装配特征，该方法简捷、高效；提出向装配面投影的装配特征间接获取方法，该方法在现有特征基础上生成装配特征，解决了部分装配特征难以直接获取的问题； 3研究了基于装配特征的飞机装配型架骨架自动装配技术，采用一种二叉树装配模型表达骨架的装配关系，并通过装配特征的分配、获取和赋值三个步骤，实现了骨架分别与飞机产品和可调支承的自动装配，避免了繁琐的人工交互操作，提高了骨架设计的效率和规范化程度； 4研究了飞机装配型架骨架零件间建模技术，在总结归纳骨架元件相贯处理方式的基础上，提出了骨架元件单剪切相贯、双剪切相贯和互剪切相贯的实现算法，简化了骨架相贯处理的过程； 5基于以上研究，在CATIA平台上开发了飞机装配型架骨架快速设计子系统，并应用于某大型航空企业的装配型架设计，提高了设计效率和设计质量。

This paper presents a design method of an off-line portable scanner, which can be used without computer. We discuss the system based on a synchronous Digital Signal Processor with multicenter, which is used to gather data with high speed. TIs TMS320VC5402 is a sixteen-bit fix processor, and we make it the core of our control system. Because it can not only handle data with high speed but also manipulate the data by abundant arithmetic/logic operations and determine the results of processing which can be output quickly as images.

本文提出了一种能够脱机使用的便携式扫描仪的设计思想，论述了高速多通道同步DSP数据采集系统，以高性能的TMS320VC5402十六位定点DSP为核心，充分利用其强大而高速的数据处理能力对采集的数据进行复杂的运算，并快速以图形方式输出处理结果。

To the concrete two-phase flow -crude oil, its temperature, speed and capacitance value are measured by flat capacitance sensors, FLUKE RLC instrument and other auxiliary appliance. Assessing the characters of crude oil and predicting the solidifying point is the result of using fuzzy information arithmetic.

针对具体的两相流——原油，用平板电容器、FLUKE精密电桥和其它辅助传感器分别测取了原油的热处理温度、降温速率和电容值，利用模糊信息融合算法对测量值进行处理和寻优，从而进行原油热处理的综合评定和凝点的在线预测。

Adopt the arithmetic of synchronization disturbance random approach presented by Spall to train the Neural Network Controller by the output error of system.

采用Spall［1］提出的同步扰动随机逼近的算法，通过系统的输出误差对神经网络控制器进行训练。

List said with a crossbow sparse matrix, the matrix to achieve two together, subtraction, multiplication and arithmetic.

以十字链表表示稀疏矩阵，实现两个矩阵的相加，相减，和相乘的运算。

Spatial data;Spatial interpolation;Estimated point;Classification;Arithmetic

空间数据；空间插值；参估点；分类；算法

In this dissertation, we analyzed the residual images of MSI, stored the residual images as 1-D data in spectral direction in order to enhance the correlation between neighbor data, and coded them by context-based arithmetic coding.

本文通过分析多光谱图象的残差图象的特点，将其残差图象按谱维方向重新排列成一维数据，增强相邻数据之间的相关性，建立上下文模型，再进行算术编码。

On basis of analyzing discriminative characters of speech and music signals, a real-time speech/music classification arithmetic is presented, which classifys audio signal into speech and music in real-time with tonality distribution property and spectral tilt Additionally, the classification results are smoothed for rationality.

分析了语音和音乐的区别性特征，提出了一种利用音调分布特性和频谱倾料度对语音和音乐进行实时分类的算法，并对分类结果进行简单平滑，使分类更为合理，从而提高音质。

Finally, based on the geometric model and arithmetic for the coordinates of spherical circular hole series, this paper demonstrates how to convert the planar measuring and calculating results to three-dimensional measuring results, and exhaustive experiment results validate the precision this measurement could achieve.

最后建立了球面孔系坐标的几何模型及算法，实现二维测量到三维测量的转换，并以详尽的实验结果对本测量系统所能达到的精度进行验证。

By a large scale of actual cases and theoretical analysis, it shows that the arithmetic in this article has a very stable convergence and very fast convergent speed, at the same time, gives accurate calculated value.

对于求解这个非线性方程，提出了一个数值迭代算法，并对该算法的收敛性进行了证明，给出了最大迭代步数的上限值。

In other research, chondroitin is being investigated for use in several other conditions.

在其它研究，软骨素被调查用於几个其它情况。

They would make fun of him for having to work.

他们拿他的工作来开玩笑。