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An S-shape acceleration/deceleration control model is developed by summation progression and the corner of two conjoint lines is adopted as a parametric variable to control the feedrate through the inflexion of two lines. Based on these, interpolation process is divided into two steps: interpolation pretreatment and interpolation point calculation. Feedrate planning is accomplished in the pretreatment step. Interpolation point calculating only depends on the real-time feedrate and the direction vector of the line.

该算法以级数求和的方法推导了S型加减速控制模型，并以小线段夹角为参变量控制拐点通过速度建立了小线段速度衔接模型，在此基础上，算法将插补过程分解为插补预处理及插补点计算两个步骤，预处理中对小线段进行速度规划并设计了线段速度的递推处理方法，插补点仅需根据当前速度及线段方向向量即可求出。

It抯 a four-story building, with the first two floors housing upperclassmen and the upper two floors housing freshmen for a total capacity of 192 students. Parrott is a traditional residence hall with two-person roomsand a community bathroom in the middle of each floor.

这是一个能够容纳192名学生的四层楼，楼中一二两层住高年级生，三四两层住一年级生的。P宿舍有传统的2人间、3人间，在每层楼中间有公共浴室。

The processor (50) generates partial matrix H1 to satisfy the conditions that, when any two rows contained in partial matrix H1 are selected, the two rows have periods that are relatively prime, or when the periods are identical, the two rows have different phases.

处理器(50)产生子阵H1以满足以下条件：当选择子阵H1中所包含的任何两行时，这两行具有互质的周期，或者当周期相同时，这两行具有不同的相位。

Genetic diversity analysis within and between the green peafowl and the blue peafowl populations demonstrated that the expected heterozygosity of two peafowl populations were 0.2482 and 0.2744, respectively. The inbreeding index, Reynolds' genetic distance and gene flow between the two populations were 0.078, 0.0603 and 3.896 respectively. These results indicate that the heterozygosity and the genetic diversity of these two peafowl populations were very low, and suggest a tendency towards intermixing.

蓝孔雀和绿孔雀群体间和群体内的遗传分析结果表明，绿孔雀和蓝孔雀两个群体的期望杂合度分别为0.7422和0.6943，群体间的遗传分化系数为0.078， Reynolds'遗传距离和基因流分别为0.0603和3.896，结果显示这两个孔雀群体的杂合度和遗传多样性水平都很低，且有相互混杂的趋势。

The sophistical comfort came in reflected gleams from the decayed furniture, the raggcd brocade upholstery of a couch and two chairs, a footwide cheap pier glass between the two windows, from one or two gilt picture frames and a brass bedstead in a corner.

破旧的家具、破烂绸套的沙发、两把椅子、窗户间一码宽的廉价穿衣镜、一两个烫金像框、角落里的铜床架——所有这一切折射出一种似是而非的舒适之感。

This strange animal is about one metre, a long and a beard "Seals first" two ears and little sub-petal, from the two long yellow front tooth, the obesity animal pierced live may concentration, the hind legs of the two ducks problems, but blame is its tail, this rough shape of the tail is about 50 cm, as one Piggish tail.

这个奇怪的动物身长约一米，长着生有胡须的"海豹头"，两只耳朵不大且分瓣，上下各两颗长长的黄色门牙，这个肥胖动物的前爪活似鸡爪，后肢则生着两只鸭子蹼，更怪的是它的尾巴，这条粗状的尾巴长约50厘米，像一头肥猪的尾巴。

This paper analyzed the randomness of the relative position relation between the common vertical line of the two axes of a coupling and two centers of a coupling during installing machines,and the randomness of the position of the support plane on which a machine is installed.It pointed out the errors formed by the two randomness and illustrated the faults of the four parameters system which is used in describing the shaft alignment error of a coupling by abroad technician.

分析了机器安装过程中联轴器两轴线的公垂线与联轴器中心的相对位置关系的随机性及机器地脚支承面方位的随机性，指出了两种随机性所产生的误差，说明了国外工程界在描述联轴器对中误差时所用的4参数体系存在的不足。

Two basic theorems are given by researching Hamilton's two steps linear differential equations of bender equations which provide widespread application methods of normal differential operator correspond to ladder operators,then the solutions of general equations are obtained by taking advantage of the two above theorems: The energy eigenvalue equation of one-dimensional oscillator; the common state of ; the radial equation of a bondage state of hydrogen atom; the radial equation isotropic three-dimensional harmonic oscillator; the infinity deep potential well of ball

本文通过研究束缚态本征方程里的哈密顿算符的二阶线性常微分形式，给出两个基本定理并证明，提供构造二阶线性常微分算符相应的阶梯算符的普遍实用的方法，然后利用这两个定理构造量子力学中常见力学量的阶梯算符，并用以计算其能量本征值和对应本征函数：一维谐振子的能量本征方程；共同本征态；氢原子束缚态径向方程；三维各向同性谐振子的径向方程；无限深球势阱。

C,are because of the interaction between two stars that orbit each other 时说除了because 用法错误外,the prase "two stars that orbit each other" illogically suggests that there are two particular stars causing all the phenomena in question,rather than various sets of stars in various locations.

为什么这里用了that 定语从句就表示特指，而ING结构则没有该含义？——————————————that定语从句是限定性修饰，--ing是非限定性修饰。ing形式一般是表示伴随，伴随状态或者是结果，可以理解为非限制性定语从句。限制性的定语从句把原句的意思改变了。

Firstly, the paper introduced the working principle and device of the two-pass grate-rotary kiln and had an analysis method of mechanics of the tyre. We have put forward the finite element analysis of the contact stress of the tyre-roller based on the whole construction mode of shell-kiln liner-large gear-tyre-roller of the rotary kiln and obtained the strength and distributing rule of the tyre's contact stress. The research shows that within one week the contact stress mainly lies in two leading peak value and catastrophe which appear at the contact zone of the tyre and supporting roller. Then we regarded the tyre's stress as the test of unknown plane stress of principal stress. Utilizing mature and modern testing technology, we raised the testing principle and scheme of tyre stress and then had a on-the-spot test of the stress. Comparing the analysis result of the test with the one calculated from the finite element analysis, it proofed the rationality of finite element analysis method of integral modeling and the correctness of the contact stress result of the tyre and roller. Finally, for two-pass of similar rotary kilns, using the ANSYS APDL re-development technology, carried on the re-development about the overall finite element analytic method of thecontact stress of tyre-roller.

首先，本文介绍了2档回转窑的工作原理和装置，对滚圈的力学行为进行了分析，提出了基于筒体-滚圈-托轮的回转窑整体建模的有限元分析法，来对滚圈-托轮的接触应力进行有限元分析与计算，得到了滚圈接触应力的大小和分布规律，并求得滚圈外中内圈节点的主应力；其次，把滚圈的受力看成是主应力未知的平面应力的测试，利用现代测试技术，提出了滚圈主应力测试的原理和方案，并对滚圈的主应力进行了现场测试，现场测试分析结果与有限元分析计算出的主应力相比较，证明了整体法建模的有限元分析方法的合理性和滚圈-托轮接触应力结果的正确性；最后，利用ANSYS的APDL的二次开发技术，针对2档同类回转窑，就滚圈-托轮接触应力的整体有限元分析法进行了二次开发。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。