Considering the pitch deviation, pitch accumulative deviation, flank angle deviation and their combined influence on the pitch diameter, the authors present a complete differential optimal approximate model in this paper and use the ideal thread to approximate the actual thread radially and axially.

本文建立的螺紋中徑當(dāng)量全微分優(yōu)化逼近模型先锋影音强奸，考慮了螺距偏差久久综合色88888、螺距累積偏差和半角偏差本身及其相互間對(duì)中徑的綜合影響欧美激情在线播放一区二区三区，并用理想螺紋在徑向和軸向二維逼近實(shí)際螺紋。

The rules of the cold-test characteristics changing with helix pitch are also studied and it turns out that, with increasing helix pitch, the phase velocity increases linearly, the interaction impedance changes nonlinearly and the attenuation constant decreases nonlinearly. At the same time, with the limitation of the synchronism between the electron beam and the electromagnetic wave, the change of pitch is small and therefore an approximate linear relation can be introduced.

研究表明：相速幾乎隨螺距增大而線性變大欧美大黄视频，互作用阻抗與螺距是非線性的關(guān)系另类区图片小说综合，衰減常數(shù)隨螺距增大而非線性地減谢粕驹谙呙夥严略亍；由于在維持電子注與電磁波速度同步的限制下欧美综合在线观看免费，螺距變化的幅度不可能很大色欲影院www色欲影院，因此可近似按線性關(guān)系來(lái)處理互作用阻抗及衰減常數(shù)與螺距之間的關(guān)系。

1 When thickness of the short pitch or long neck flange straight side of Type B doesn't equal to the cylinder thickness connected with it: If cylinder thickness is not larger than 10mm, and thickness difference with short pitch or long neck straight side is larger than 3mm; If cylinder thickness is larger than 10mm, and thickness difference with short pitch or long neck straight side is larger than 30% of the cylinder thickness or 5mm, Type B flange should take the slope value 1: 3, and the long neck flange should be thinned according to Chart 1, or have pile welding on the end of butt welding seam to achieve transition.

6.5.1 乙型法蘭的短節(jié)厚度或長(zhǎng)頸法蘭的直邊厚度與其相聯(lián)接的圓筒厚度不等時(shí)：若圓筒厚度不大于10mm自拍偷拍一页，且與短節(jié)或長(zhǎng)頸直邊厚度差超過(guò)3mmyw最新；若圓筒厚度大于10mm，且與短節(jié)或長(zhǎng)頸直邊厚度差大于圓筒厚度的30%或超過(guò)5mm時(shí)亚洲中文字幕第一网站，乙型平焊法蘭應(yīng)按斜率1：3天堂在线免费视频，長(zhǎng)頸對(duì)焊法蘭按圖1虛線削薄，或者在對(duì)接焊縫的筒體端部按圖2堆焊過(guò)渡福利偷拍。

A design method of non-perpendicular pitch cone of the honing wheel is presented in this article. By adjusting the distance from the contact point of pitch cones to the axis of honing wheel, the relative velocity between pitch cones is ensured to be in the direction of the tooth trace of the gear.

提出了用于珩磨螺旋錐齒輪的非正交珩磨輪節(jié)錐面的設(shè)計(jì)方法2012免费观看在线播放，通過(guò)調(diào)整節(jié)錐面切點(diǎn)到珩磨輪軸線的距離，保證了節(jié)錐面之間的相對(duì)速度恰好沿著齒長(zhǎng)方向日本巨大爆乳一级在线观看。

The definiens and working principle of controllable pitch propeller are introduced, the characters of CPP mechanism are summarized, and three types of shipping are concluded, which is applicable to equip with controllable pitch propeller by compared with pitch propeller. The control system of CPP usually adopts PID control, but the parameter of PID controller is adjusted inconveniently so as not to receive favorable result, therefore, the CPP control system based on fuzzy and neural network control is proposed so that improving the control effect. The result shows that the system design is feasible and effective.

介紹了可調(diào)螺距螺旋槳的定義及工作原理一级黄片二级黄，并歸納了可調(diào)螺距螺旋槳推進(jìn)裝置的工作特性及特點(diǎn)，通過(guò)與定距槳進(jìn)行的對(duì)比分析露脸精品一区二区三区，總結(jié)出適用于可調(diào)螺距螺旋槳的三類船舶免费国产牲交视频在线播放；目前調(diào)距槳控制系統(tǒng)一般采用傳統(tǒng)的PID 控制方法，但由于PID控制器的參數(shù)不便于調(diào)節(jié)79av视频在线观看，不能取得良好的控制效果国产一级精品A片观看视频，從而提出了基于模糊神經(jīng)網(wǎng)絡(luò)控制的調(diào)距槳控制系統(tǒng)的設(shè)計(jì)，以提高調(diào)距槳在各種工況下的控制效果中国性猛交XXXXX免费看，仿真試驗(yàn)結(jié)果表明了調(diào)距槳控制系統(tǒng)設(shè)計(jì)的合理性久久五月天婷婷综合。

The numerator in this fractional designation is known as the diametral pitch and controls the pitch diameter; the denominator, which is always double the numerator, is known as the stub pitch and controls the tooth depth.

在這一系列的分?jǐn)?shù)中的分子是徑節(jié)，徑節(jié)的大小決定了節(jié)圓的直徑亚洲电影免费观看；而分?jǐn)?shù)中的分母通常是分子的兩倍国产亚洲一二三，分母是殘余徑節(jié)，它的作用是控制齒槽的深度精品91。

Stub Pitch is a number used to denote the radial distance from the pitch circle to the major circle of the external spline and from the pitch circle to the minor circleof the internal spline.

殘余徑節(jié)：殘余徑節(jié)是一個(gè)數(shù)在线国产观看，它用于表示節(jié)圓與外花鍵的大圓或內(nèi)花鍵的小圓之間的半徑差。

The coal tar pitch powder was used with each of 22 kinds of dispersants prepared coal tar pitch water slurry,and 6 kinds of dispersants were selected to prepare coal tar pitch water slurry with the high temperature coal tar pitch powder which has a softening point of 105℃.

采用冷凍粉碎的方法將軟化點(diǎn)為90℃的中溫煤瀝青制得粒度≤200目的煤瀝青粉后国产不卡免费一级视频，再與22種分散劑制備煤瀝青水漿2020免费黄色视频，從中篩選出6種成漿性好的分散劑再與軟化點(diǎn)為105℃的高溫煤瀝青粉制備煤瀝青水漿18岁禁看黄色网站，結(jié)果表明中溫煤瀝青粉比高溫煤瀝青粉更易制得穩(wěn)定性好的煤瀝青水漿日韩精品激情视频网站免费观看在线。

The results show that the coal pitch based activated carbon not only has good sphericity but also narrow particle size; with the same material pitch, the more naphthalene content, the lower the softening point of the modulated pitch. The max mass ratio of pitch to the liquor is 16 and the optimal speed is different using different stirrer.

結(jié)果表明：所制得瀝青球球形度好，表面光滑瑟瑟的网址，粒徑分布范圍窄日本国产欧美性爱；相同原料瀝青影音先锋啪啪啪，萘含量越高調(diào)制瀝青軟化點(diǎn)越低；瀝青/水相的最佳質(zhì)量比為16久久99久久1；不同的攪拌器最佳速度有所不同97福利国产大黄片。

An experimental study of 300 mice exposed to pitch(3 gm.dissolved in 10 ml.of 80% benzene solution)obtained from 4 different sources,name- ly Anshan coal-tar pitch,Yu-men petroleum pitch,Dairen petroleum pitch or commonly known as Russian crude oil and the Asia Oil Company, USA,was carried out over a period of 350 days.

三根據(jù)四種來(lái)源不同的瀝青所引起皮膚良性與惡性病變的發(fā)病率和潛伏期的長(zhǎng)短，可將其毒性的強(qiáng)弱順序排列如下：(1)鞍山煤焦油瀝青日韩,欧美一不卡，(2)美國(guó)亞細(xì)亞公司石油瀝青欧美老妇性爱视频在线，(3)大連石油瀝青，(4)西北玉門石油瀝青一级做a欧美。