轮形的

In order to solve the theoretical backlash problem of the teeth, which is crucial to the number of actual contact pairs of teeth in the research on multi teeth contact of crown gear coupling , the theoretical backlash of teeth flank with the concept of backlash angle is first time defined and described in the paper, and the minimization model of its variables is set up.

为解决鼓形齿联轴器多齿接触研究课题中的实际接触齿对数的关键技术轮齿理论间隙的问题，首次用间隙角的概念对轮齿理论间隙作了定义和描述；建立了该变量的极小化模型；对一鼓形齿联轴器作了实际优化计算，得出了鼓形齿联轴器多齿接触研究中计算实际接触齿对数所需的不同啮合状态下的最小间隙角

The middle of each finger-shaped grass-poking wheel is provided with a round disk whose circumference is distributed with a plurality of finger-shaped teeth uniformly.

指形拨草轮中间为圆盘区，沿着圆盘的圆周均匀地分布着多个(10～12个)手指形轮齿。

In order to obtain actual preferred principle of processing parameter about three-roller backward spinning of tube,nonlinear FEA software ANSYS/LS-DYNA is,carried on 3D dynamic simulation,stress analysis and strain analysis to three-roller backward spinning of tube under different processing parameter.

为了确定更为符合实际的筒形件三旋轮强力反旋工艺参数的选用原则，利用大型非线性有限元软件ANSYS/LS-DYNA对不同工艺参数下筒形件三旋轮强力反旋旋压过程进行了动态模拟和应力应变分析。

Among them, fungi of Hyphomycetales were dominant. The pathogenicity test of Beauveria amorpha and Verticillium indicum to larvaes of Cerura menciana and Parnops glasunowi were tested. The average pathogenical effect of Beauveria amorpha c...

选取其中的多形白僵菌和印度轮枝菌，分别对林业害虫杨二尾舟蛾、杨梢叶甲幼虫进行杀虫活性试验，多形白僵菌的平均杀虫效果高于印度轮枝菌 16 。4 %。

Stamens usually twice as many as petals and in 2 whorls, rarely as many as petals by loss of 1 whorl, isomorphic or dimorphic; filaments distinct, often geniculate, inflexed in bud; anthers typically 2-celled, introrse, basifixed, dehiscent by 1 or 2 apical pores or by short longitudinal slits; connective often variously appendaged.

雄蕊通常是花瓣数量的两倍并且2轮，有时1轮而与花瓣同数，同形或二形；花丝离生，通常膝曲，在芽期内折；花药通常2室，向内，基着，通过1-2顶孔或短纵裂裂缝开裂（Astronia ，Memecylon；药隔通常有不同的附属物。

On an average, 1.1±0.3 and 0.4±0.1 rotifers were hatched from per milliliter sediments of the big and the small basins, respectively. The rotifer species, which was hatched at one incubation pattern from the resting eggs in sediments of both the two basins of the lake and whose density was higher than 20ind/200mL, included Proalides tentaculates , Anuraeopsis fissa , Keratella cochlearis , Brachionus diversicornis , Filinia brachiata and B .

mL的轮虫种类总计有6种，它们是多须伪前翼轮虫、裂痕龟纹轮虫、螺形龟甲轮虫、裂足臂尾轮虫、臂三肢轮虫和萼花臂尾轮虫；其中前三种轮虫为两湖区所共有。

On the basis of analyzing the characteristics of new typed FA planetary transmission of cycloidal needle-wheel, a set of force bearing analysis theory of tooth surface with the modification of tooth profile of cycloidal gear was put forward.

在分析FA新型摆线针轮行星传动特点的基础上，提出了一套摆线轮齿形修形下的齿面受力分析理论，并采用MARC工程软件对针齿和摆线轮齿面的接触状态进行了有限元分析，结果证明了受力分析理论的正确性。

Seven Brachionus species in Lake Jinghu were found, of which Brachionus calycflorus, B. angularis, B.diversicornis and B.forficula were determined as common species due to their higher population densities and occurrence frequency. The population density of both B.calyciflorus and B. angularis reached the peak in February and March and decreased rapidly after April, while that of both B. diversicornis and B. forficula remained high during June-September and decreased sharply after October.

结果表明，镜湖常见的7种臂尾轮虫中，仅萼花臂尾轮虫、角突臂尾轮虫(B.angularis)、裂足臂尾轮虫(B.diversicornis)和剪形臂尾轮虫(B.forficula)的种群密度和出现频率较高；前两者种群密度高峰期均出现在2~3月份，4月份后均较低；后两者种群密度在6~9月份较高，而在10月份后很快下降。

Company's main products are: glass Xiebian machine, straight-edge, the bilateral plane, profiled machine, drilling machine, sculpture and other flowers, with the round of King Kong, resin round, wool round, water-round, round mud, bits, Polishing powder, cutting fluid; sandblasted glass used in PVC film, nozzle, spray gun, glass paint, plastic glass Edge, Mopan, the car spent round; glass cutting tools, removal tools, Vientiane, water mains, boring films, Saw Blade , Steel, cotton Jincong powder, imported UV glue, ultraviolet lamps and other glass supplies.

公司主要产品有：玻璃斜边机、直边机、双边机、异形机、钻孔机、雕刻花机等，用的金刚轮、树脂轮、羊毛轮、水松轮、泥巴轮、钻头、抛光粉，切削液；玻璃喷砂用的 PVC 保护膜、喷咀、喷枪、玻璃漆、玻璃封边胶、磨盘、车花轮；玻璃切割工具、搬运工具、万象水管、钻片、锯条、钢丝棉、金葱粉、进口 UV 胶水、紫外线灯等玻璃耗材。

The central inner gear theory equation and tooth profile work equation with two-teeth difference cam profile rolling movable teeth were deduced, and in the consideration of central gear influenced by several parameters, the central gear tooth profile modification mode was analyzed and synthesized roundly.

推导二齿差凸轮激波滚动活齿传动的中心内齿轮理论方程及工作齿形方程，在给出考虑各参数影响的中心轮修形通用方程的基础上，较为全面地对中心轮齿廓的几种修形方式进行分析和综合。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐