蜗

The computation results show that under two degree-of-freedom motion, the process of enveloping the worm is of point contact form, and the worm surface is generated by contact points, regardless of the type of generant, such as straight line, plane and disk annular curved surface.

本文又首次提出并建立了在双自由度运动状态下，用平面砂轮和盘状环形砂轮包络加工圆柱蜗杆传动的方案及数学模型，其目的在于拓宽包络圆柱蜗杆传动的应用范围，对此也编制了相应的计算机软件。

METHODS: The spiral modiolar artery in guinea pig cochlea was exposed by microsurgery, then the fluorogold or horseradish peroxidase was given around the SMA for retrograde tracing.

在正常豚鼠单侧耳蜗螺旋蜗轴动脉局部滴加逆行追踪剂辣根过氧化物酶或荧光金，观察双侧交感颈上神经节、星状神经节内HRP或FG逆标神经元的分布；采用逆标与免疫组化相结合的双重标记方法观察追踪阳性神经元是否表达酪氨酸羟化酶、神经肽Y、钙基因相关肽或P物质。

Methods: the spiral modiolar artery in guinea pig cochlea was exposed by microsurgery, then the fluorogold or horseradish peroxidase was given around the sma for retrograde tracing. the bilateral superior cervical ganglia and stellate ganglia were observed to find retrogradely labeled neurons. the neurotransmitters of these sympathetic fibers around sma were ascertained by using retrograde tracing combined with immunohistochemical double labeled technique.

在正常豚鼠单侧耳蜗螺旋蜗轴动脉局部滴加逆行追踪剂辣根过氧化物酶或荧光金，观察双侧交感颈上神经节、星状神经节内hrp或fg逆标神经元的分布；采用逆标与免疫组化相结合的双重标记方法观察追踪阳性神经元是否表达酪氨酸羟化酶、神经肽y、钙基因相关肽或p物质。

A worm and worm gear are used to provide a high angular-velocity reduction between nonintersecting shafts which are usually at right angle.

蜗杆和蜗轮通常是用于向垂直相交轴之间的传动提供大的角速度减速比。

Most of hob design for non-involute gears are nowadays taken by approximation method.For example,the normal sectional profile of hob worm therad is usually regarded approximately as its basic rack profile.Recently, some new methods have been developed in this respect but, perhaps, they appear overelaborate since the principle of spacing engagement is based on. For this reason , the paper offers a new design procedure for hob worm based on the planar engagement principle with the intention of simplific...

本文应用平面啮合原理精确设计各种非渐开线齿轮滚刀的基本蜗杆，提出并应用啮合线的投影原理从工件齿轮端截面的啮合线直接求得刀具蜗杆的端面齿形，而不必求出媒介齿条的齿形，方法很简单，还从啮合线的投影原理简明而形象地证明了一对螺旋齿轮直接啮合过程的啮合线是一条垂直于齿向的平面曲线。

Objective: To explore valuable methods and landmarks for locating cochlea, and provide anatomic data for drilling petrous pyramid during the middle cranial fossa approach.

目的：探讨耳蜗的定位方法和定位标志，为颅中窝手术入路中磨除岩尖及耳蜗在颅底外科的临床应用提供解剖学资料。

Results: The distance between medial wall of the basal turn of the cochlea and the porus trigeminus was about (10.36±1.50)mm.

结果：耳蜗基底圈的内侧壁至三叉神经孔的距离为(10.36±1.50)mm，下颌神经与岩浅大神经交点和内耳门后缘的连线至三叉神经孔的距离为(8.04±0.99)mm，提出耳蜗的定位四边形。

A lot of studys indicate that presbycusis is related to microcirculation of the cochlea, medicine of improving microcirculation is used to treat presbycusis.

通过营养神经扩血管药物—碟脉灵，主要成分为腺苷和异黄酮，改善耳蜗微循环，促进耳蜗细胞自由基的清除，提高听阈。

The worm gear and the worm shaft is adopt precise process and precise match checking, Insure the satable transmission、 low temperature、low noise level、high efficiency and long life.

蜗轮蜗杆输入、输出部分采用精密光整处理，确保整机不生锈，提高产品档次和使用寿命。

In order to enhance the transmission efficiency, reduces the organization the size and the weight, uses is the worm gear worm bearing adjuster--Gear drive organization, and rapes satisfiedly the request which may rotate in horizontal and the vertical direction.

为了提高传动效率，减小机构的尺寸和重量，采用的是蜗轮蜗杆--齿轮传动机构，并且满足云台在水平及垂直方向均可转动的要求。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。