By analysing and calculating the variations in distribution of axis direction contact force and contact pressure on screw thread, the influence of errors of pitch and taper of casing screw threads to the properties of resisting pull and sealing liquid and gas are studied. Based on the result obtained through analysis, a reasonable tolerance distribution for pitch and taper is proposed.

最后成人无码秒播在线观看视频免费下载，本文通過分析計算內(nèi)外螺紋不同的螺距、錐度參數(shù)配合時黄色网址在线观看a，軸向載荷及接觸壓力在螺紋上分布的變化自拍偷拍日韩欧美，研究了套管螺紋的螺距、錐度參數(shù)誤差對套管螺紋接頭的拉伸和密封性能的影響少妇毛片免费视频，并依據(jù)分析結(jié)果提出了二參數(shù)公差帶的合理分布。

Our ShengLei wear-resisting Alloy Ltd,Co has a long history of casting and imitating famous brand quick-wear parts,and co-duelop with Shanghai on the melt in the cement,pitch sting machie ,leaf,pitch spiral blade of pawer,press plateform,excavator figh tooth and so on .

盛磊耐磨合金有限公司有著鑄造加工和鑄仿著名品牌易損件的歷史人人人人人人人操干，并與上海有關(guān)院校金相研究中心最新黄色在线网址，共同開發(fā)水泥與瀝青攪機中的襯板、拌葉国产va小视频，及瀝青攤鋪機的螺旋葉片欧美性爱一级大黄片，熨平板、挖掘機斗齒国产强奸av片，支撐架等新品種视频无码在线看。

Tantalum-containing pitch as a carbon precursor was synthesized by an in situ liquid phase reaction between coal tar pitch and tantalum pentachloride.

以煤瀝青為原料，氯化鉭為鉭源一日韩免费视频，通過化學反應制備了含鉭瀝青前驅(qū)體亚洲日韩欧美97超碰。

Jorge Posada hit a leadoff single, reaching third when centerfielder Torii Hunter let it get past him, and scored on Silva's wild pitch. Matsui doubled and scored on a single by Abreu, who was safe when shortstop Jason Bartlett failed to hold the throw on an attempted steal. One out later, Cano was hit by a pitch by Juan Rincon. After the runners moved up on Damon's comebacker, Cabrera singled to drive in both. He took second on the throw to the plate and scored the fifth run of the inning on the second of Jeter's three hits.

Jorge Posada率先擊出安打，并且因為中外野手Torii Hunter 讓球滾到身后而登上三壘香焦A片黄片，再趁Silva的暴投得分在线影院欧美，松井擊出二壘安打后靠著Abreu的一壘安打得分，Abreu則因游擊手Jason Bartlett無法接住傳來的球而盜上二壘中文真人视频一区二区三区，在一人出局之后一级毛片一级，Cano被Juan Rincon的觸身球打上一壘，兩位跑者靠著Damon打回給投手的滾地球推進之后国产在线拍偷自拍无码，Cabrera擊出一壘安打把他們都送了回來www.91sese婷，并趁球傳回本壘時上到二壘，最后靠Jeter三支安打中的第二支得到該局的第五分黄片一级二级三级黄。

But now the pitch could come in handy to get grounders and to keep his pitch count down.

不過現(xiàn)在最新91地址偷自在线永久入口，他似乎能夠輕松地投出下沈球屄乱伦肏屄，適時造成打者滾地球出局，并讓他的用球數(shù)更精簡久久中文字幕乱码久久午夜加勒比。

In order to resolve the practical problem about measuring hobs with bigger modulus, a new method is put forward by which the circular adjacent pitch error and accumulated pitch error of hobs can be measured on the grinder.

針對大模數(shù)滾刀測量存在的實際問題欧洲乱码伦视频免费，提出一種在磨床上測量滾刀容屑槽相鄰周節(jié)誤差和周節(jié)累積誤差的新方法，并給出了測量實例国产jiuse视频网站最新地址。

Based on the 3D solid model, the changing trend of spiral angle and pressure angle of pitch cone, the thickness-changing trend of face and pitch cone can be analyzed. In addition, the method of cutting tooth on general NC machining center and the measurement of tooth flank geometry on 3D CMM are conducted.

根據(jù)錐齒輪切齒仿真所獲得的三維幾何模型av在线你懂得，本文還研究了在通用四軸聯(lián)動加工中心上加工錐齒輪齒形的方法和在通用三坐標測量機上進行錐齒輪齒面幾何形狀誤差測量及數(shù)據(jù)處理方法。

Through rotary joint, the high pressure oil from machinery space is sent to the actuator (pitch safety cylinder and pitch control cylinder) in the hub.

通過旋轉(zhuǎn)接頭將機艙內(nèi)的高壓油送到輪轂內(nèi)的執(zhí)行機構(gòu)在线日韩成人电视播放网站视频免费。

The acoustical and statistical tests showed that energy, duration and pitch are not equivalent factors in determining a boundary; that is, the energy was the most obvious factor while the pitch was the most obscure.

這不是按照構(gòu)成節(jié)奏邊界的聲學因素的重要性排列的国产一级片操逼视频，而是在語圖中能較容易辨別出的聲學因素的順序。要正確判斷節(jié)奏邊界狼友视频入口首页面，必須在CSL畫面中顯示所有聲學因素的畫面并且考慮所有的聲學因素97人妻无码视频在线一区。

Based on the relationship between the numerical aperture of the objective lens and scale pitch, this study chooses a suitable Plano-convex lenses available on the market, so as to approximate the diameter of the focusing spots to scale pitch. Also, by using the optical path of an optical encoder similar to the nanoscale, the changes in the surface profile of the scale can be measured directly, so as to obtain the two quadrature sinusoidal signals. By counting the zero crossing of these two quadrature sinusoidal signals and calculating the interpolation value of these two quadrature sinusoidal signals, the moving direction and moving displacement value of the scale can be obtained.

研究中再以搭配物鏡的數(shù)值孔徑與尺條間距的關(guān)系，選擇ㄧ適當?shù)氖惺燮酵雇哥R美国av毛片，使聚焦光點的直徑與尺條的間距相近亚洲校园欧美国产另类性色，并使用相同於奈米級長行程雙雷射聚焦讀頭裝置的光路設(shè)計，如此將可藉由直接量測尺條的表面輪廓變化87人人操人人爱，以獲得一組正交弦波訊號好吊操国产精品，繼而利用訊號四分割與細分割處理，計算出尺條之移動方向與移動量久艹只有精品，研制出一實用性長行程雙雷射聚焦讀頭光學尺国产精自拍。