圆的

ABSTRACT Based on theoretical analysis of axial compression of ring-shape specimen between two flat dies by an upper-bound technique,it is possible to carry out the measurement of both the friction coefficient of lubricant and the basic flow stress of the ring material under particular temperature and strain rate.

摘 要 根据圆环压缩的连续速度场上限定理的理论分析，通过圆环试样压缩前后的几何尺寸的变化，能测量润滑剂的摩擦因数和圆环材料的流变应力。

In this thesis, terahertz transmission properties through three kinds of simple sub-wavelength metallic structures, including single sub-wavelength metallic circular hole, single sub-wavelength metallic slit and double sub-wavelength metallic slits, are experimentally investigated in the far field by using our own THz time-domain spectroscopy system and are theoretically analyzed. Conclusions are obtained as follows:(1) a single sub-wavelength metallic circular hole exhibits the same terahertz transmission properties as that of round metallic waveguide, which are influenced by the diameter of circular hole and the thickness of metal foil.

本文利用本实验室搭建的太赫兹时域光谱系统研究了太赫兹波段金属亚波长结构的透射特性，其中对三类金属亚波长简单结构即单个金属亚波长圆孔、单个金属亚波长狭缝和金属亚波长双缝的太赫兹透射现象进行了远场探测以及理论上的分析，得到了以下一些成果：(1)太赫兹波通过单个金属亚波长圆孔的传播现象与圆形金属波导具有相同的规律，其特性受到圆孔直径和金属箔厚度的影响。

The ORF2 gene is the most important protein-code gene for porcine circovirus, and is the main gene differing porcine circovirus typel from porcine circovirus type2 (PCV2). To construct a specific PCR detecting method, we designed a pair of primers to amplify a partial fragment of ORF2 gene from PCV2, referring to fifteen strains complete genome published in Genbank. The PCR product was about 0.67kb in size detected by gelose gel electrophoresis.

猪圆环病毒的开放阅读框2(ORF2)是其主要结构蛋白的编码基因，也是区分猪圆环病毒1型(PCV1)和猪圆环病毒2型(PCV2)的重要基因，本研究参照GenBank已发表的15株PCV2基因序列，设计合成一对引物，对PCV2的ORF2基因进行PCR扩增，产物经琼脂糖凝胶电泳，呈现一条大小约0.67kb的特异条带，经条件筛选，建立了猪病料中PCV2感染的PCR检测方法。

The method how to separate the radial jumpiness of the large shaft by three-point method to gain the round error in high precision is showed particularly. In the part of diameter measurement, this paper indicates how to standardize the photomicrosensor and shows the way how to use correction signal correct the measure error of the grating system which is used to measure the rotated angle of the wheel in detail.

文中详细论述了在圆度误差测量中，利用三点法分离大轴支承径向跳动引起的测量误差而获得高精度的圆度误差测量值的方法以及直径测量系统中，光电开关测量精度的标定方法和通过构建误差修正函数对实现滚轮转角测量的圆光栅系统的测量误差进行实时修正的方法。

The annulus model captures the key features of rotating convection in full spherical geometry and has been widely employed to study convection, magnetoconvection and dynamos in planetary systems, usually in connection with the small-gap approximation neglecting the effect of azimuthal curvature of the annulus.

圆环模型被广泛用来研究行星系统的对流，磁对流和发电机。通常在这些研究中用到了小间隙的近似，忽略了圆环的环向曲率效应。我们这一工作用数值模拟方法解完全的非线性对流方程组来研究有限间隙的旋转圆环中的非线性对流。

Ecological environment factors affecting its growth and development and the spatial distribution characteristics of plant autoeciousness of Hemiberlesia pitysophila were comprehensively analyzed by combining Maxent ecological niche models with geographical information system technique in this paper.The relatively exactly potential distribution region of Hemiberlesia pitysophila in whole Chi...

本文选用Maxent生态位模型与地理信息系统相结合，综合分析影响松突圆蚧生长发育的环境因素，结合寄主分布特征，非常直观定量地获得了松突圆蚧在我国的潜在发生区，计算结果经ROC曲线分析法验证，Maxent生态位模型的AUC值为0.991(非常接近于1)，表明预测获得了较好的效果，研究可为松突圆蚧的检疫及防治决策的制定提供科学依据。

For recent years I am in fond of drawing human body for the same appreciation—round, plump and shaped human body is "archy" and "round", outline border is "line" and "square", which are matched with fruits on behalf of life such as "guava""lotus head" and "apple" in the shape of "round" or "half round" put into bottle, plate or pot in the shape of "curve""round" and "half round".

近年我爱画的人体也是基于这样一种感悟——浑圆、丰满、富有曲线的人体呈&弧线&、&圆形&，外框则是&直线&、&方形&，再配以各种代表生命的果实，比如&石榴&、&莲蓬&、&苹果&一类，其造型皆呈&圆&或&半圆&的&放射状&，插在或放在&曲线&或&圆&或&半圆&或&圆中见方&的瓶里、盘里、罐里。

The most popular during the Shang Dynasty was the "bird and beast" design,hu,(long-necked and small opening, deep-bellied with round base, some with overhanging handle),you (elliptic opening, deep-bellied with round base, has a lid and overhanging handle), lei (some round and some square, openings vary in size, short neck with square shoulders, deep bellied, with curling feet or round base, and has a lid), fou and the like are wine vessels, jue (deep-bellied, tri-pedestal, can be heated on top of fire, protruding grooves at the top for easy pouring), gu (the most common wine-drinking utensil, more often used in combination with jue, which is bigger, opening is shaped like a bugle, long neck, thin waist, tall curling feet), zh(similar to the zun in shape but smaller, some with lids), gong (oval belly, has an outer edge for flow of wine, short handles, bottom has curling feet, lid is in the shape of the head of a beast, some has an entire body like a wild animal, with small spoon as accessory), bei, zhen is to drink from.

尊（鼓腹、敞口、高颈，底有圈足，形制较多，商代以鸟兽形尊最为流行）、壶（长颈、敛口，有的有盖，深腹圆座，有的有提梁）、卣（椭圆口，深腹圆座，有盖和提梁）、罍（有圆形和方形，口大小不一，短颈方肩、深腹，圈足或圆底座，有盖）、缶等是盛酒的器具，爵（深腹、三足，可在火上加温，上端有伸出的沟槽以倒酒）、觚（最常用的饮酒器，多与爵相配使用，比爵小，口呈喇叭状，长颈、细腰、高圈足）、觯，觥（椭圆腹，有流酒的外沿和短提把，底为圈足，有兽头形盖，也有整体为兽形的，并附有小勺）、杯、盏是饮酒的器具。

Nle key to every man is his thought.

人生是一个自我进化的圆从一个微乎其微的小小的圆永无止境地向四周扩展成新的更大的圆。

According to topographic information of Dongyang and Wanshou which are tentatively chosen as the sites to assemble grounding poles,the selection of d/D ratio,namely the ratio of radius of two adjacent toroids,of standard triple toroidal grounding poles,the burial depth characteristics of each sub-toroids and the feasibility of adopting such type of poles are researched.

分析了直线形、星形和圆环形3种常见水平接地极的特点，结合溪洛渡、向家坝直流换流站初选东阳和万寿极址的地形资料，对标准3圆环接地极的环径比例选择、各子圆环的埋深特性及采用该电极型式的可行性进行了分析研究。

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。