In this method, the effect of the course of the excavation to the coefficient has been taken into consideration and the coefficient can be got by the initial tangent modulus of the curve about stress-strain relationship.

而目前關(guān)于其沿深度的變化規(guī)律有多種不同的假設(shè)全部色费特色黄特色大片看片，水平向基床系數(shù)的取值大多憑工程經(jīng)驗(yàn)及現(xiàn)場(chǎng)試驗(yàn)來(lái)確定春色校园激情综合在线影院，帶有很大的隨機(jī)性且缺乏足夠的理論依據(jù)99久久性爱白浆。

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.

首先人人摸人人操人人搞不卡不断，通過(guò)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)和幾何條件亚洲黄色网址大全，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)齒面欧美色综合天天综合高清网，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99这里还有精品。

The point on a curve where the tangent changes from positive on the left to negative on the right.

曲線上的一點(diǎn)，切線斜率在這點(diǎn)左邊為正污污污视频网站色，在這點(diǎn)右邊為負(fù)欧美永久一级片。

The point on a curve where the tangent changes from negative on the left to positive on the right.

曲線上的一點(diǎn)，切線斜率在這點(diǎn)左邊為負(fù)亚洲精品偷拍与自拍，在這點(diǎn)右邊為正免费先看一级A片在线不卡。

C If the tangent in meets the curve again at Q, find the coordinates of Q.

若 中的切線與曲線在 Q 相交，求Q 的坐標(biāo)黄色网站中文字幕。 3 分

B Find the equation of the tangent to the curve at the point P.

求曲線在 P 的切線方程欧美性荡视频。 3 分

The access is tangent to the curve and the spaces refer to the interior

入口處與建筑的曲線和內(nèi)部空間相切〖で槲蘼朐谙吖劭矗客廳的"公共空間"是透明的

B Find the equation of the tangent to the curve at the poin t P.

求曲線在 P 的切線方程男人的天堂欧美性爱。 3 分

Using beam line theory and moment rotation curve to determine tangent connection stiffness.

用梁線理論和彎矩-轉(zhuǎn)角曲線確定切線連接剛度。

But since their repositioning on tangent track and steering on curve line are not reliable enough,they have not been applied and developed on a large scale for a long time.

本文通過(guò)理論分析和動(dòng)力學(xué)計(jì)算表明国产精品对白交换，采取適當(dāng)措施使獨(dú)立車(chē)輪輪對(duì)以拖動(dòng)的形式前進(jìn)屌屄黄色视频，可以有效解決獨(dú)立車(chē)輪的導(dǎo)向問(wèn)題。