轴杆

The structure and the performance of the single screw extruder of electromagnetism dynamic are presented.

简要介绍了电磁动态单螺杆挤出机的结构性能，分析了螺杆在振动力场作用下的轴向受力状况。

The mathematical modeling, dynamic simulation and its strength analysis of the new stirring kneader are the center contents of this paper.

根据新型搅拌捏合机的特点，借鉴双螺杆混炼机螺杆截面形成原理，结合相对运动学理论，研究搅拌轴的螺棱外形曲线形成过程，并建立其数学模型，由此设计合理的螺棱外形。

On the principle of the parallel four link rods machanism, using two group parallel and equal distance spring slices, by a series of mechanism links, the position changes of rods and measure head on two grooves were showed by measuring meter in order to measure the change amount of two groove distance on central spindle of spinning bearing .

本文运用了机械原理中平行四杆机构原理，采用两组平行等距弹簧片组，通过一系列结构连接，使杆、管臂测头在两沟道中的位置变化，由测量仪表显示出来，从而达到测量纺杯轴承心轴上两沟间距离的变化

The products combined more than 10 series gearboxes with thousands of specifications, which include R Rigid tooth flank helical gear units, S Helical-worm gear units, K Helical-bevel gear units,F Parallel shaft helical gear units, T Spiral bevel gear units, SWL, JW Worm screw jack H.B Rigid tooth flank gear units, P Planetary gear units, RV Worm reducer. These products are slowdown drive device that is commonly adopted in the field of current international industrial transmission.

公司生产R系列斜齿轮减速电机，S系列斜齿轮－蜗轮减速电机，F系列平行轴斜齿轮减速电机，K系列斜齿轮－锥齿轮减速电机， X 系列摆线针轮减速机， T系列螺旋锥齿轮转向箱，H、B系列标准工业齿轮箱，蜗轮丝杆升降机机，RV系列蜗轮蜗杆减速机等十余个系列，数千种规格的产品，是目前国际上工业动力传输领域最普遍采用的减速驱动装置。

In this paper, we use linear elastic and power hardening function to approximately represent the stress-strain curve of material.

将材料的本构关系描述为线弹性幂强化形式，推导出了各杆铰接在一个定轴转动刚体上的平面杆系弹塑性分析的普遍表达式，使问题得到了圆满的解决。

In this model, axial yarns, braider yarns and resin were treated as spatial beam elements. Each unit cell is then treaded as space truss.

其中，轴纱、编织纱和基体均被视为两端铰接的空间杆单元，复合材料用离散的杆单元组成的桁架结构代替。

Hangzhou Tianma Textile Machinery Co., Ltd. is the earliest in the non-woven fabrics for professional research and Production business, products related to the scope of the various professional rapier spinning Poncirus the field of production, from the beginning of the GA731 radius of the rapier-based development to the present HGA732 series looms, not only to meet High-end textile fabric weaving, and particularly good at some special professional-woven fabric, such as: a common standard loom, the production of silk yarn and high-precision electronic fabric of electronic coiling off high-end electronic Dobby looms, production All kinds of terry cloth towel loom, wide loom (Reed said the biggest increase was 4.6 meters), all kinds of industries with a cloth loom, Shaluo fabric looms, the Zhuang Shibu electronic Jacquard loom, the production of different warp The double-shaft looms, but also provide root Zelkowa acuminata special requirements of large package of cloth, Vol device as a whole and not for the cheese-and absorbed by the device.

杭州天马纺织机械有限公司是国内最早从事无梭织机专业研究与生产的企业，产品范围涉及到剑杆织机的各种专业纺枳品生产领域，从最开始的GA731桡性剑杆织机为基础发展到现在的HGA732系列织机，不但能满足高档纺织面料织造，并且特别擅长于一些特殊专业织物的制织，如：通用的标准型织机、生产真丝与高支纱等精细织物的电子卷取电子送经电子多臂高档织机、生产各种毛圈织物的毛巾织机、宽幅织机（最大公称筘幅为4.6米）、各种产业用布织机、纱罗织物织机、电子大提花的装饰布织机、生产不同经纱的双层经轴织机等，还可根椐特殊要求提供大卷装的机外卷布装置和用于不整经的筒子经架与匀经装置。

Through Hilbert transform, a signal's plane trace can be get. There are two frequencies in the tested signal, so the signal's plane trace may be looked as the track of the out pole's end when two poles rotate around parallel axles. Using the knowledge of motion synthesis in theory mechanics, a formula to describing the change of plane trace's step length and angle for two-frequency be get. So we may prolongate the tested signal's plane trace from the echo's initial arriving moment, and get a certain length of the signal's prolongation.

通过Hilbert变换可得到测试信号的平面迹线，测试信号中只含有两个频率成分，视为双频信号，双频信号的平面迹线相当于两连杆绕平行轴转动时外杆杆端迹线，利用理论力学中运动合成和瞬心知识，推导出双频信号平面迹线步长平方满足余弦线性复合函数，而迹线转角可视为线性变化，据此可对回波到来之前的测试信号平面迹线作延长，得到一定长度的信号延展段，信号延展段与实测段作差可得到一次、二次回波的第一个波峰值。

In the unstiffened overlapped CHS joints experiment, the wall thickness of brace member in non joint zone would be increased so as to calculate axial fotceb directly by the way of elastic method.

建议在后续的搭接节点试验中，可将非节点区域的腹杆壁厚加大，以便通过弹性方法直接反算杆件轴力。

Based on experimental results of unstiffened overlapped circular hollow section joints, the axial forces of experimental truss members connected with hinge joints, semi hinge joints or rigid joints, are calculated by the finite element analysis model.

以平面K型圆钢管搭接节点的试验数据为基础，通过对试验桁架建立铰接、半铰接和刚接杆系有限元模型，计算受外荷载作用下试验桁架各杆件的轴力。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。