Owing to the key conclusion, this paper lays emphasis on the possible ways of realizing the singular conjugation by single—enveloping method. It is proved that the hyperbolic normal arc surface and the involute helicoid both may conjugate in singular points on the condition of single—envelope.

在奇點(diǎn)共軛理論的工程實(shí)現(xiàn)方面，文中明確指出二次包絡(luò)是獲得奇點(diǎn)共軛的有效手段Jinv在线视频，但并非唯一手段，在滿足特定的運(yùn)動(dòng)幾何條件下，一次包絡(luò)即可獲得奇點(diǎn)共軛www.天天操。

We build the model for the enveloping worm helix parametric equation and then analyze its relations with the enveloping worm helix tooth surface equation,thus establishing the characteristic model of the involute helicoid enveloping worm′s generative gears.

漸開面環(huán)面蝸桿的三維構(gòu)建屬?gòu)?fù)雜曲面造型，文章在環(huán)面蝸桿螺旋線參數(shù)方程建模的基礎(chǔ)上正品毛片黄片，分析討論了其與漸開面環(huán)面蝸桿螺旋齒面方程的對(duì)應(yīng)關(guān)系亚洲第一区二区在线观看，建立了漸開面包絡(luò)環(huán)面蝸桿產(chǎn)型齒的特征模型。

In addition, to form a brass quintet, Mr. Helicoid-horn shifted his instrument from the trumpet to the French horn.

當(dāng)時(shí)為了順利組成銅管五重奏国产精品三区视频，蝸牛喇叭先生也從吹奏小號(hào)轉(zhuǎn)為吹奏法國(guó)號(hào)狼狠亚洲综合狼狼久久。

Because of the characteristics of tiny ecoenvironment under the gums, gums next stir up an in great quantities poisonous dint's bigger tooth week to the germ in the germ spot, like gum rod bacteria, in the center type rod bacteria, helicoid etc., make the burning disease of gum aggravated and expand to postpone, cause tooth for week bag formation and the tooth slot bone absorption, make tooth burning for week.

由于齦下微生態(tài)環(huán)境的特點(diǎn)，齦下菌斑中滋生著大量毒力較大的牙周致病菌国外黄片免费视频，如牙齦類桿菌国产丶欧美丶日本不卡视频，中間類桿菌，螺旋體等中国黄色中文字幕，使牙齦的炎癥加重并擴(kuò)延爱爱人人操，導(dǎo)致牙周袋形成和牙槽骨吸收，造成牙周炎91精品在线国产。

The shape of the tooth is an involute helicoid.

牙的形狀是斷開線螺旋面我要看一级免费毛片我要看一级免费毛片看。

This thesis proposes a fill-parametric geometric model of casing threads according to the formation theory of conical helicoid.

本文的選題就是在這樣的背景下提出并展開的，作為一項(xiàng)基礎(chǔ)性研究18岁以下禁止看的黄色视频，有很高的理論和應(yīng)用價(jià)值成年人视频在线观看免费品爱网。

To simplified the designing, diagram presentation, construction and profile of helicoid al stair, the formation of helicoid is analyzed, and it′s mathematical model is studied.

為簡(jiǎn)化旋轉(zhuǎn)樓梯的設(shè)計(jì)、圖示日韩美女午夜精品视频网站免费观看、施工及剖面形狀亚洲国产欧美日韩久久，對(duì)螺旋面的形成進(jìn)行了分析，建立了螺旋面的數(shù)學(xué)模型欧美性爱色。

To the dog pathogenesis is the hemorrhagic yellow helicoid and the dog hook end helicoid two blood serums.

對(duì)狗致病的是出血性黃疸螺旋體和犬鉤端螺旋體兩個(gè)血清型毛片片在线。

Being formed by linear grain curved surface, helicoid can be expressed by a group of simple lines. Writing two equations of inside and outside of the helicoid, getting any one of simple line′s equation and from which getting the coordinations of two end points by projection transformation, the CAD system of helicoid is achieved. It...

由于螺旋面為直紋曲面，因此可用它的一組素線表示国产精品无码视频一本，用極坐標(biāo)的形式寫出內(nèi)外兩條螺旋線的方程三级视频在线免观看，求出任一素線的方程，并通過投影變換求得素線上兩端點(diǎn)的坐標(biāo)矩陣www26uuu.com，進(jìn)而設(shè)計(jì)出螺旋面的CAD系統(tǒng)国产欧美性爱另类在线，并將其應(yīng)用于實(shí)踐小蝌蚪视频国产，為設(shè)計(jì)優(yōu)化決策提供有力的證據(jù)。

Chapter 2 establishes a helicoid model of the 3D curved shock surface, which is a fundamental means for investigating the sweep of the 3D shock surface In chapter 3, the first step is to make definitions and detail concepts about various viewpoints of shock surface sweep. Secondly, those sweep angles of the 3D shock are calculated. After that, with the aid of the helicoid model, two general structure similarity variables are derived which are independent of any model, and their importance in shock structure investigations is discussed.

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