Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通過分析保證行星輪作螺環(huán)運(yùn)動(dòng)時(shí)與內(nèi)斜齒輪實(shí)現(xiàn)連續(xù)嚙合傳動(dòng)的運(yùn)動(dòng)和幾何條件精品福利一区二区三区，提出了圓柱內(nèi)斜齒輪齒面的兩種形成原理：即由球齒運(yùn)動(dòng)包絡(luò)曲面的法截面沿其齒根圓螺旋線在徑向的投影進(jìn)行拓展所形成的內(nèi)齒面先锋影音资源在线，以及與球齒運(yùn)動(dòng)包絡(luò)曲面呈近似相切接觸的等螺距齒面構(gòu)成的內(nèi)齒面。

The hairdressing dentistry one who establishes to exclusively bring trouble in the center carries on a super voice Jie tooth and spray powder Jie the item of the tooth, also the development has a plain Jie tooth private, their enthusiasm contributes efforts to you and dissipates sorrow for you and return you have a healthily pure tooth, let you smile to often open

美容牙科中心設(shè)有專門為患者進(jìn)行超聲潔牙和噴粉潔牙的項(xiàng)目日日艹干日，并有培養(yǎng)有素的潔牙士95视频高潮喷水，她們熱情為您服務(wù)，為您解憂特黄男女交性A片激情视频三，還您有一副健康潔白的牙齒国产麻豆精品二区无码专区，讓您笑口常開

In the peacetime, the bactria results in of the chronic infection will make gum inflammation, easily bloodshed, palatine bone absorption, decayed tooth and toothache, end because dens turnover get sick of tooth loose move or dens neurapophysis necrosis and pull out a tooth, next door usefully the second molar teeth be usually also subjected to spread and result in at this time the injury of waiting the degree even pull out a tooth not, this is also the most regrettable place.

在平時(shí)，細(xì)菌造成的慢性感染會(huì)使牙齦發(fā)炎影音资源站，容易流血亚洲午夜三级片，骨吸收，蛀牙及牙痛国产精品久久无码HD毛片，最后因牙周病的牙齒松動(dòng)或牙髓壞死而拔牙日韩午夜在线试看网站免费，這時(shí)隔壁有用的第二大臼齒往往也會(huì)受到波及而造成不等程度的傷害，甚至拔牙，這也是最可惜的地方MSAV欧美在线播放。

The tooth stone calculus is a kind of foreign body body to mouth cavity, it will continuously stimulate a tooth to organize for week, and will oppress a gum, influence blood circulation, germ infection make the tooth organized for week, cause gum inflammation's atrophying, formation tooth week bag bag.

牙結(jié)石對(duì)口腔而言是一種異物體久久国产福利一区二区精品，它會(huì)不斷刺激牙周組織，并會(huì)壓迫牙齦黄色精品视频免费观看，影響血液循環(huán)国产经典在线观看亚洲AV，造成牙周組織的病菌感染，引起牙齦發(fā)炎萎縮美女黄色视频污污版网站，形成牙周囊袋色综合手机在线视频区。

Tooth color or appearance are poor, four wreaths plain tooths, tooth defection and damage or external injury break of tooth, can also pass to roast a porcelain tooth to get a perfect repair.

牙齒顏色或形態(tài)不佳、四環(huán)素牙美女黄色h网站网址、牙齒缺損或外傷折斷的牙齒亚洲永久免费视频在线，也可以通過烤瓷牙得到完美的修復(fù)。

The purpose pulled out a tooth for vacating space, give those because tooth hustle cause not tidy tooth rules, as for the blind side pulling out a tooth will gather together when the time comes, this hands over to a doctor, so don't the white purpose asks a doctor, whether want to inset false teeth the crevice pulling out, the words of false teeth directly don't sooner roast porcelain and also be subjected to this offense

拔牙的目的是為了空出空間午夜两性免费视频，來給那些因牙齒擁擠導(dǎo)致不整齊的牙齒規(guī)位色呦呦网站在线，至于拔牙的縫隙到時(shí)候會(huì)合攏，這個(gè)交給醫(yī)生久久亚州黄色视频，所以不要白目的問醫(yī)生国产黄色视频免费关看，是不是要把拔掉的空隙鑲上假牙，要假牙的話直接去烤瓷不更快3p国产精品一区，還受這個(gè)罪啊

The company specialized production enrichment plant, provides the technical process, the dressing experiment, the installment instructs www.lzkysb.cn gentle yu 0797-5745599 saw-tooth wave coal jig, the mutual lack of understanding coal jig, side moves the type coal jig, the side moves the type coal jig, gets down moves the type coal jig, the double room mutual lack of understanding coal jig, the dressing coal jig, the movable sieve jig, the saw-tooth wave big pellet coal jig, the JT coal jig, the company produces the coal jig, fights the coal jig only, the mutual lack of understanding coal jig, the twin-bucket coal jig, the saw-tooth wave rectangle coal jig, the saw-tooth wave trapezoidal coal jig, left -likethe right -like coal jig has JT, LTSso on each kind of series, this machine is the stationary screen is minor, is suitable for the classification ore mineral, like the tungsten, the carry gold placer, selects the tin oreso on, may also use inChooses the fine grain materialthe large grain material, gives the ore granularity is 30 millimeters most greatly.

公司專業(yè)生產(chǎn)選礦設(shè)備AAAAA国产黄片在线播放，提供工藝流程，選礦實(shí)驗(yàn)国产老师色，安裝指導(dǎo)www.lzkysb.cn溫良禹0797-5745599鋸齒波跳汰機(jī)韩国乱伦A片，隔膜跳汰機(jī)，旁動(dòng)式跳汰機(jī)黄视频网站一致，側(cè)動(dòng)式跳汰機(jī)淫淫色色视频，下動(dòng)式跳汰機(jī)，雙室隔膜跳汰機(jī)国产精品一级黄片，選礦跳汰機(jī)欧美三级网址在线观看，動(dòng)篩跳汰機(jī)，鋸齒波大顆粒跳汰機(jī)操操操网址，JT跳汰機(jī)，公司生產(chǎn)的跳汰機(jī)欧美视频大全，單斗跳汰機(jī)黄色免费a片短视频，隔膜跳汰機(jī)，雙斗跳汰機(jī)日韩福利首页在线观看网站，鋸齒波矩形跳汰機(jī)性爱小视频免费看，鋸齒波梯形跳汰機(jī)，左式和右式跳汰機(jī)有JT，LTS等各種系列毛片免费视频高清，該機(jī)是固定篩子式国产-igao在线观看，適用于選別金屬礦石，如鎢人妻被强视频系列无码专区，含金的砂礦日本在线免费看片，精選錫礦等，也可用于選細(xì)粒物料和粗粒物料免费一级大毛片a一观看不卡，最大給礦粒度為30毫米黄色网站网址免费。

However, whether the degree of tooth wear has something to do with tooth microstructure, how specific occlusal factors affect the development of tooth wear, and what kind of relationship exists between tooth wear and bruxism or TMD, all these are not clear yet.

作為磨損發(fā)生的主體，牙齒的內(nèi)部結(jié)構(gòu)與磨損程度之間是否存在一定的關(guān)系深夜求在线观看网站，牙齒所構(gòu)成的特定的個(gè)體咬合因素及其生物學(xué)力學(xué)特征會(huì)對(duì)磨損產(chǎn)生何種影響六月婷婷五月激情，口頜系統(tǒng)兩大功能紊亂性疾病——磨牙癥、TMD與磨損之間存在何種關(guān)系美女裸体18禁止免费网站，均尚不清楚91叫床高潮娇喘嗯啊在线观看。

For cutting the composite lock gear with unequal tooth thickness, a study is made on the design method of gear sharper cutter with nonstandard parameter involute tooth profile and noninvolute tooth profile. The cutter tooth arrangement, the choice of teeth number of the cutter and the basic method of cutter design are discussed; and a new method of choosing deflection factor by using limited area is presented.

研究加工不等齒厚的非標(biāo)準(zhǔn)參數(shù)漸開線齒形，與非漸開線齒形復(fù)合的鎖閉齒輪插齒刀刀齒的排列一级做a爰全过程免费视频、刀具齒數(shù)的選擇以及刀具設(shè)計(jì)的基本方法国产乱子伦一区二区三区，介紹用限制區(qū)域選擇插齒刀變位系數(shù)的新方法，并給出刀具齒頂后角與側(cè)螺旋角的關(guān)系曲線一级黄片性爱，為插齒刀參數(shù)的選擇提供依據(jù)色哟哟精品一区二区三区。

Roast a porcelain tooth of probably age segment at 20-60 years old of, it needs to fix an original tooth to whet very thin 1 F before making, because the Heng tooth of teenager didn't develop completely, Sui chamber generous, easily wound and tooth Sui.

烤瓷牙的大概年齡段在20-60歲之間，它在制做前需將原有的牙修磨很薄一層亚洲日本欧美色图，因青少年恒牙未發(fā)育完全爱爱无毒安全免费网站，髓腔寬大，容易傷及牙髓十八禁啪啪污污网站免费。