查询词典 rectangular formula

Traditionally, a surface is usually scatted in an array of 3D data points which are topologically connected by rows and columns to form a rectangular mesh. This method can't meet the requirement of description and measurement for some complex surfaces. On the basis of tracing border points, a new method is proposed to deliver 3D data points of surfaces, which are topologically constructed with optimum rectangular and triangular mesh. In order to measure surface efficiently and safely with NC machine, an optimization of measurement paths is proposed to avoid interference between the measuring tool and the surface with holes. The curve design is the basis of surface modeling.

数控测量技术的发展为测量自动化、集成化、智能化提供了可能，而对于复杂曲面的自动测量规划则是测量技术中的难点问题，平行截面等数目测点分布和四边拓扑测点分布规划方法，不论在测点分布的合理性上还是在网格结构的优化方面，均难以满足形状或边界较复杂曲面的离散化描述和曲面造型的要求，为了实现任意拓扑曲面的自动测量，本文对复杂曲面的合理离散化描述和自动测量问题进行了研究，提出了基于边界跟踪、优化网格的测点自动分布规划和四边、三角混合网格的生成方法：同时对具有孔洞或测量干涉凸台等非完整曲面的测量路径优化问题进行了研究，提出了路径优化方法。

Round and rectangular piston transducers are the common sound source in ultrasonic nondestructive testing, and combination plane arrays of line and rectangular array are the foundation of investigating phased array technology, so simulating these sound field is significant for studying ultrasonic field simulation.

圆形活塞换能器、矩形活塞换能器是超声无损检测中常用的声源，而线列阵组合平面阵和矩形阵组合平面阵是相控阵换能器研究的基础，因而其声场的模拟在超声场模拟的研究中具有重要意义。

Commonly used cylinder cylinder-shaped structure, but with the cylinder variety of development and the improvement of processing technology has been widely used in square, rectangular shaped tubes and turn the cylinder used for anti-hole of rectangular or oval shaped pipe.

缸筒一般采用圆筒形结构，但随着气缸品种的发展及加工工艺技术的提高，已广泛采用方形、矩形的异形管材和用于防转气缸的矩形或椭圆孔的异形管材。

We first will separately discuss the classic CPW fed circular printed slot antenna and rectangular printed monopole antenna. Afterward we propose the ultra-wideband CPW fed circular printed slot antenna with trapezoidal tuning stub and wideband rectangular printed monopole antenna with a fork-shaped feeding strip.

吾人将先分别探讨典型共平面波导馈入之圆形印刷式槽孔天线及矩形印刷式单极天线，继而提出具梯形调谐段之共平面波导馈入超宽频圆形印刷式槽孔天线及具叉型馈入带线之宽频矩形印刷式单极天线。

Using the software of ansys, this thesis compares and analyzes the seismic behavior of the joint of cold-formed rectangular tube-steel column and H-shaped beam and the joint of welding box column and H-shaped beam, in order to research the influence for the cold forming process of the cold-formed rectangular tube-steel column.

利用大型通用有限元分析软件，对冷弯矩形钢管柱与H型钢梁连接节点与焊接箱形钢管柱与H型钢梁连接节点的抗震性能进行对比分析，探讨出冷弯矩形钢管的特性对节点抗震性能的影响。

Pipe end its shape is divided into tube, square tube, rectangular tube, oblate tube, P-shaped pipe, Rectangular pipe.

钢管因其端部外形又分成圆管、方管、矩形管、扁圆管、 P 形管、异型管。

Pipe end its shape is pided into tube, square tube, rectangular tube, oblate tube, P-shaped pipe, Rectangular pipe.

钢管因其端部外形又分成圆管、方管、矩形管、扁圆管、 P 形管、异型管。

Experiments were done to contrast the heat tansfer enhancement and pressure loss caused by several single-pare vortex generators such as delta winglets,rectangular winglets,trapeze winglets,bevel-cut half-cylinder VG and bevel-cut half-elliptical column VG,which were installed in a rectangular tunnel respectively.

在雷诺数为4000～38000的紊流范围内对矩形风道内分别布置单排一对直角三角翼、矩形翼、梯形翼、斜截半圆柱体、斜截半椭圆柱体等涡流发生器的强化传热效果和压降特性进行了对比实验。

The paper mainly discusses eye detection and gaze tracking algorithm. On the basis of Paul Violas face detection conception with rectangular features, this paper finds some rectangular features that is suitable with eyes, and with these features the Adaboost cascade classifiers are trained for eye detection.

首先，在Paul Viola矩形特征人脸检测思想的基础上，又设计了一些适合于眼睛的矩形特征，利用这些矩形特征训练了Adaboost层叠分类器，用于眼睛检测，并根据眼睛对称性的特点，应用了一些几何特征对层叠分类器的检测结果进行校正。

Diverse forms, including: round, egg shape, rectangular, square, pear, horse-shaped eyes, heart-shaped, triangle, square staircase, Wu Jiaoxing-fat rectangular, ingot-shaped saddle-shaped, plum blossom-shaped, diamond-shaped, axes Shape, pillow-shaped cross-face-shaped leaves, bridge-shaped, three-dimensional drop of water, spherical, moon-shaped, and so on more than 100 models of products.

形状多样，其中包括：圆形、蛋形、长方形、正方形、梨形、马眼形、心形、三角形、梯方形、五角星形、肥长方形、元宝形、马鞍形、梅花形、菱形、斧头形、枕头形、十字架、素面、树叶形、桥形、立体水滴、球形、月亮形等100多款式的产品。

We are in a good position to meet your requirements.

我们完全可以满足你方的需求。

We are all pervade d with a sense of disaster.

我们普遍有大祸降临的感觉。