细长度

The article introduces the character of alpaca's serration. It also test, alpaca's processing properties, Such as length, fineness, crimp, frictional properties and so on. After test and measurement, it compares alpaca's properties with cashmere, botany wools and 64s wool.

介绍了羊驼毛纤维表面的鳞片形态特征，对其长度、细度、卷曲、摩擦等工艺性能进行了测试分析，并与山羊绒、超细羊毛、64支澳毛进行了对比研究。

In order to simulate more realistic three-dimensional yarn, the essence of a soft yarn appearance and main problems of soft yarn appearance simulation was analyzed. The main factors on impact of soft yarn appearance were defined, which included of fiber length, fiber fineness, yarn means, yarn twist and direction twist and yam bulkiness.

为了模拟真实感较强的三维纱线，从纱线的本质分析入手，探讨柔性纱线模拟过程存在的主要问题，确定影响纱线外观模拟的主要因素有纤维的长度和细度、纱线的细度、捻度和蓬松度等。

The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.

本论文的主要工作包括以下几个方面：（1）在对粒子场测量的相关理论和具体方法进行综述分析的基础上，提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路；（2）研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统，并使其实现了对粒子场粒径分布的测量功能；（3）研制了基于粒子运动轨迹的速度场重建算法，获取了细水雾雾场的速度分布；（4）研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统"，该系统既可分析给出粒子场的粒径分布直方图和平均粒径，还可给出粒子的数目以及最大、最小粒径等信息；（5）建立了一细水雾发生系统，并应用上述方法对不同压力条件下细水雾系统的雾场特性（如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等）进行了实验测量研究；（6）对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析，并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证，同时对其局限性进行了分析讨论；（7）对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。

The present invention relates to a textured yarn with different shrinkage and excellent suede effect, wherein at least one or two kinds of two-component composite yarn having a monofilament fineness of 0.001 to 0.3 denier after dividing or extracting an extraction component are twined around a thermoplastic multifilament yarn, 2 to 350 loops per meter of the two-component composite yarn of at least 1.0 mm in length are formed on the surface of the textured yarn, and more than 95% of the two-component composite yarn loops of at least 1.0 mm in length has a length of 1.0 to 2.5 mm.

本发明涉及具有不同缩率和出色麂装饰效应的变形纱，该变形纱中，在可提取组分分离或提取之后具有单丝细度为0.001至0.3旦尼尔的至少一种或两种双组分复合纱缠绕在热塑性复丝纱周围；每米双组分复合纱2至350个长度至少为1.0mm的弧圈在变形纱的表面上形成，且95％以上的长度至少为1.0mm的双组分复合纱弧圈具有1.0至2.5mm的长度。

This well prove that relative length of pachytene chromosomes was a stable data and it was more appropriate to act as a parameter to establish pattern on the condition of with same material.

用Image J染色体分析软件来测量家蚕粗线期染色体相对长度和绝对长度与传统的细铜丝测量相比，减少了步骤，降低了主观误差，大大提高了准确性和工作效率。2。

A row of six fine mesh point of girth is equal to the circumference of a rough dot length. 6 row sum of fine mesh point is six times the coarse locations.

一排6个不细网不面的周长相加即是一个不不细网不面的圆周长度。6排不细网不面的总和是不不细网不面的6倍。

Because wreath tablet the hair feather of the yarn appearance with spin cotton serial number, yarn Nian degree, thin spindles soon, the involution take shape all of etc.s to spin cotton craft parameter to have direct influence, in the meantime because of wreath tablet the hair feather of the yarn appearance have no rule, at yarn surface of distribute and present random, even each segment of yarn length of same yarn size reflection of the hair feather be average value, the hair feather of various length value usually difference also big.

由于环锭纱线的毛羽状态与纺纱号数、纱线捻度、细纱锭速、卷绕成形大小等纺纱工艺参数有直接影响，同时由于环锭纱线的毛羽形态无规则性，在纱线表面的分布呈随机性，即使同一纱线大小纱各段长度反映的毛羽平均值，各种长度的毛羽值往往差异也大。

In this paper, the sorting of wear, the mechanics of wear particle formed and the characteristics of wear particles are introduced, and morphology characteristics parameter of wear particle are determined, which is particle brim digital feature. Based on image characters, after pre-process, section and extracting of contour parameter of wear particle using image process technique, four shape character parameters are extracted by fourier series expansion. After analyzing fundamental principle and shortcomings of neural network, current BP algorithm is improved in output optimization, network linearization implication optimization and adding momentum, and then astringe speed of BP algorithm.

本文介绍了磨损的分类以及磨粒的生成机理、磨粒的形态特征，应用摩擦学系统分析的观点，确定磨粒边缘数字特征为磨粒的识别特征参数；根据磨粒图像的特征，利用计算机图像处理技术对磨粒图像进行预处理、分割、轮廓参数的提取，采用傅立叶级数展开式提取磨粒四个形状特征参数：圆形度、散射度、凹度、细长度；针对 BP(Back-Propagation)神经网络收敛速度慢的特点，对现行的 BP 算法进行改进，并通过实验验证改进后的网络收敛速度快；研究设计了磨粒图像采集系统；利用 BP 算法建立磨损磨粒自动识别算法模型 AWPRM(Auto Wear Particle Recognition Model)。

Seven morphological parameters of hair were observed on the lanugo of a roe deer fetus 10 to 15 days before birth by linear eyepiece micrometer and optical microscope, which include hair density, hair length, medulla length, hair diameter, medulla diameter, scale pattern, and medullar pattern. Results indicate that the development of lanugo expresses temporal and spatial sequence, namely, hair occurs from head to tail.

利用线性目微尺和光学显微镜测量比较了距出生还有10~15d的狍颈部、背部、腹部、臀部、后肢上部的胎毛密度、毛长度、髓质长度、毛细度、髓质细度，并对鳞片和髓质形态进行了观察，发现狍胎毛的发生具有时间和空间上的顺序性，即毛的发生从头颈部向体后扩展。

double pendulum ; gravity free system ; rigid rod ; energy level set ; KAM theory

图 1 双摆模型其中 Pg 中的 g表示系统处于重力场，细杆 OA的质量和长度分别为 m1，l1，细杆 AB的质量和长度分别为 m2 、l2 ，质点 A和 B的质量分别为 m A，m B，系统Pg 绕固定点 O作平面运动

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失