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Kanic acid was injected into guinea pigs' cochleae and the excitotoxicity model was established. After a week the recombinant plasmid was transferred into SGCs of guinea pigs' cochlea treated with HAT. The following week the expression of NT-3 was examined by the immunohistochemical method, and the morphology of SGNs was observed under the electronic microscope after 4 weeks, in the mean time the changes of auditory brain-stein response were examined.

通过耳蜗灌注海人酸(kainic acid， KA)建立豚鼠耳蜗兴奋性损伤模型，在给KA 1周后利用HAT携带重组质粒进行耳蜗灌注以转染耳蜗螺旋神经节细胞，免疫组化法观察转染后1周NT-3的表达及4周后电镜下螺旋神经节细胞形态学变化，同时观察对听觉脑干诱发电位(auditory brain-stem response， ABR)的影响。

Traditional worm casting ladle is adopt to the lower light revolving shaft, before pouring, molten iron is self dumping, using self-locking of worm gear, control dumping torque of casting ladle, pouring later, man turn on hand wheel, bevel gear turn to worn gear drive, and turn casting ladle pouring, don't turn on hand wheel, another side of worm gear tooth self-locking, control vertical torque of casting ladle.

传统蜗轮浇包都是采用较低的轻便转轴，浇注前期，铁水自己倾倒，利用蜗轮的自锁性，控制浇包的倾倒力矩；浇注后期，人扳转手轮，伞齿轮转向蜗轮传动，翻转浇包浇注，不扳动手轮时，蜗轮齿的另一侧面自锁，控制浇包的竖直力矩。

With mechanical and electrical products distributor Eastern Province following brands:"Foshan City, Guangdong Province Star Transmission Limited" mechanical CVT, Worm Gear reducer,-cycloid reducer, high-speed intermittent segmentation;"Zhejiang Province Speed Reducer Factory stars,"the WP, FC models of cast iron Worm Gear Reducer" Zhejiang Huangyan motor plant "the" new turbot "Lvqiao Motors, explosion-proof motor, frequency conversion electrical, brake motors; Nanjing-controlled motor Ltd."Control of the" Iron Motor, YCT speed electromagnetic motor, and other products.

万华机电同东省总代理的产品有如下品牌：&广东省佛山市星光传动有限公司&的机械无级变速器、蜗轮蜗杆减速机、摆线针轮减速机、高速间歇分割器；&浙江省恒星减速机厂&的WP、FC型号的铸铁蜗轮蜗杆减速机；&浙江黄岩电机厂&的&新菱&铝壳电机、防爆电机、变频电机、刹车电机；南京控特电机有限公司的&控达&铸铁电机、YCT电磁调速电机等产品。

R Series production company helical gears Geared Motor, S series helical gears - worm reducer motor, F series parallel shaft helical gears geared motor, K Series helical gears - bevel gear deceleration Motors,-cycloid reducer, T series of spiral bevel gear shift Me, H, B series of standard industrial gear boxes, worm screw lift, RV series Worm Gear reducer, and so on more than 10 series, thousands of product specifications, is the international industrial power transmission area of the most commonly used by the slow drive Devices.

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，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，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。

R Series production company helical gears Geared Motor, S series helical gears - worm reducer motor, F series parallel shaft helical gears geared motor, K Series helical gears - bevel gear deceleration Motors,-cycloid reducer, T series Bevel gear to me, H, B series of standard industrial gear boxes, worm screw lift, RV series Worm Gear reducer, and so on more than 10 series, thousands of product specifications, is the international industrial power transmission area of the most commonly used The slowdown drive.

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，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，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。

The main products are: R Series Hardened helical gear reducer, S series helical gears - worm reducer, K Series helical gears - spiral bevel gear reducer, F series parallel shaft helical gear reducer, T series of spiral bevel gear to me , RV series aluminum alloy Worm Gear reducer, MB series of mechanical friction planetary CVT, hardened cylinder gear reducer and specifications of the various types of special gear, the worm reducer the design and manufacture.

R系列硬齿面斜齿轮减速机、S系列斜齿轮-蜗轮减速机、K系列斜齿轮-螺旋伞齿轮减速机、F系列平行轴斜齿轮减速机、T系列螺旋锥齿轮转向箱、RV系列铝合金蜗轮蜗杆减速机、MB系列行星摩擦式机械无级变速器、硬齿面圆柱齿轮减速机及各类特殊规格的齿轮、蜗轮减速机的设计制造。

By contrasting and analyzing of various take-ups on belt conveyor . This design is mainly about automatic windlass tension station . Its drive part makes up into worm pair and gear driver . Windlass uses worm gear worm driving reel which binds wire rope to pull tight adhesive tape . In the meantime , it adopts the frequency conversion adjusting speed motor to control tensioning force .

通过对带式输送机各种拉紧装置的比较和分析，本设计主要是自动绞车式张紧装置的设计，其传动部分由蜗轮蜗杆传动和一对开式齿轮传动两部分组成，绞车用蜗轮蜗杆传动带动卷筒来缠绕钢丝绳，从而拉紧胶带，同时采用变频调速电机对张紧力进行控制。

To cycle the action when the oil drain back into the worm gear in the box, separate the return of the oil storage tanks, resulting in increasing number of worm gear box of oil, while the oil inside the oil less and less.

经检查与分析，发现是因蜗轮、蜗杆的密封圈磨损、密封不良，使循环动作的机油在回流时漏入蜗轮箱内，分流了返回储油箱的机油，造成蜗轮箱内的机油越来越多，而储油箱内的机油越来越少。

At the points where planet gear starts engaging with worm gear or separating from worm gear, oil film thickness are bigger. And the oil film thickness is the minimum at throat part of worm gear.

蜗杆中最小油膜厚度分布情况与定子中类似，在行星轮开始与蜗杆接触及即将与蜗杆分离时较大，在蜗杆喉部最小油膜厚度最小。

The tuning hand wheel is connected to spindle of drive bevel gear. The tuner joint is inside case. The worm wheel is fixed on stepped shaft fixed by nut. The worm engage to the worm wheel is fixed inside case. The upper end of worm is connected to the driven bevel gear. The spindle of drive bevel gear across the hole on the upper cover is connected to the hand wheel.

其特征在于：壳体上有一槽体，调音手轮与主动锥齿轮的轴相连接，调音器接头安装在壳体相应调孔内，蜗轮固定在调音器接头后端的阶梯轴上，用螺母固定，与蜗轮相啮合的蜗杆固定在壳体相应的孔内，用空心螺栓将其固定，蜗杆上端与从动锥齿轮连接，从动锥齿轮与壳体之间有垫片，主动锥齿轮的轴穿过壳体上盖的孔内，并且与手轮连接，用固定螺栓固定上盖。

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。