The addendum circle is shown in thick lines, and the dedendum circle in thin ones.

齒頂線畫粗實(shí)線、齒根線畫細(xì)實(shí)線51国产精品视频，嚙合區(qū)不畫齒頂線和齒根線久久久久久久精品国产免。

The spiral angle of graduated circle was rough estimated by measuring the addendum circle diameter and modified on milling machine.

介紹了精確測(cè)繪單一斜齒圓柱齒輪齒形參數(shù)的簡(jiǎn)便方法，即測(cè)量公法線長(zhǎng)度計(jì)算基圓齒距從而查表確定模數(shù)和壓力角www.zipai；測(cè)量齒頂圓直徑估算分度圓螺旋角久久久精品国产亚洲Av，用分度頭在銑床上修正分度圓螺旋角，并進(jìn)行誤差分析婷婷网五月天天综合天天爱。

Pitch circle diameter: d = mz = 3X12 = 36 Tooth crown heights: ha = m (f0 + x)= 3X (l +0.5)= 4.5 Tooth High: hf = m (f0 + cx)= 3X (l +0.25-0.5)= 2.25 Tooth full height: h = ha + hf = 4.5 +2.25 = 6.75 Addendum circle Chemical pumps diameter: Da = d +2 ha = 36 +2 X4.5 = 45 Fixed string tooth thickness: Sxn = m (π/ 2 * cos2a + xsin2a)= 3X (1.387 +0.6428 X0.5)= 5.125 Fixed string of high gear tooth thickness measurement: hxn = m (π/ 8 * sin2a + xsin2a)= 3X (0.7476X0.117X0.5)= 2.42 Modulus coefficient x0.5 m3 O20 ° pressure angle tooth thickness Sxn5.12 fixed string Addendum Coefficient string f1 fixed gear tooth thickness measurement most high hxn2.42 Teeth z12 2, shaft wear and tear maintenance: Axis gear pump wear is mainly because with the support roller shaft at both ends between the friction and wear, so that smaller shaft diameter.

分度圓直徑：d=mz=3X12=36 齒頂高：ha=m（f0+x）=3X（l+0.5）=4.5 齒根高：hf=m（f0+c-x）=3X（l+0.25-0.5）=2.25 齒全高：h=ha+hf=4.5+2.25=6.75 齒頂圓直徑：Da=d+2ha=36+2X4.5=45 固定弦齒厚：Sxn=m（π/2*cos2a+xsin2a）=3X（1.387+0.6428X0.5）=5.125 固定弦齒厚測(cè)量用齒高：hxn=m（π/8*sin2a+xsin2a）=3X（0.7476X0.117X0.5）=2.42 模數(shù)m3變位系數(shù)x0.5 齒形角o20°固定弦齒厚Sxn5.12 齒頂高系數(shù)f1固定弦齒厚測(cè)最齒高h(yuǎn)xn2.42 齒數(shù)z12 2A片在线视频兔费观着网址、軸的磨損維修：齒輪泵中軸的磨損主要是因?yàn)檩S兩端與支撐滾針間的摩擦磨損，使軸徑變小800Avocm。

Based on varying process of generator terminal parameters after excitation fault, shortages of excitation protective principle of static stability boundary and asynchronous impedance boundary are analyzed. It proposed that excitation fault research relates to large-disturbance stability. Because dynamic power-angle character of generator after excitation fault is non-sinusoidal, there are differences between dynamic power-angle character and static state power-angle character. So it isn't ideal to protective operation result based on small-disturbance stability and static stability boundary criterion. At the same time, it proposed that asynchronous boundary impedance criterion is a constant reactive power circle moving adown j Xd′. It can ensure complete loss-of-excitation generator measuring impedance enter into the circle, but can't ensure the other condition measuring impedance including impossible losing synchronism enter. So loss-of-excitation protection would be maloperation when system voltage drops short and recovers or generator rejects load.③Based on stability principle, it puts forward setting conditions and calculation method of generator loss-of-excitation protection by direct measuring power-angle.

以勵(lì)磁故障后發(fā)電機(jī)端的相關(guān)參數(shù)的變化為基礎(chǔ)国产又爽又黄又湿免费99，通過(guò)對(duì)以靜穩(wěn)定邊界和異步阻抗邊界作判據(jù)的兩類三種現(xiàn)行勵(lì)磁保護(hù)在原理上存在的缺陷分析，發(fā)現(xiàn)：勵(lì)磁故障是一個(gè)大干擾穩(wěn)定性問(wèn)題欧美嗷嗷叫，勵(lì)磁故障后的發(fā)電機(jī)的動(dòng)態(tài)功角特性與靜態(tài)功角特性有很大的差異免费乱伦视频网址，已遠(yuǎn)非正弦曲線，因此基于小干擾穩(wěn)定性原理俄欧美激情A片在线观看、以靜穩(wěn)定邊界作判據(jù)的保護(hù)必然動(dòng)作不理想在线观看亚洲视频；異步邊界阻抗判據(jù)是一個(gè)下移j Xd′的等無(wú)功阻抗圓，它可以保證完全失磁后的發(fā)電機(jī)測(cè)量阻抗能進(jìn)入該阻抗圓视频se，但不能保證完全失磁之外的其它狀態(tài)不會(huì)進(jìn)入該阻抗圓欧美牲交免费一级A片影院，因此在系統(tǒng)電壓短時(shí)下降或發(fā)電機(jī)突然甩負(fù)荷等情況下可能啟動(dòng)該保護(hù)使之誤動(dòng)。

Again, position it over the second circle, select both shapes, click the large circle and align to vertical center.

同樣放置在第二圈上美女扒开下边喷水黄网站，選擇兩個(gè)形狀5Ⅴ99COm，單擊大圓圈，垂直中心對(duì)齊免费看性爱。

The part of the Earth's surface between the Arctic Circle and the Tropic of Cancer or between the Antarctic Circle and the Tropic of Capricorn; characterized by temperate climate.

地球上兩個(gè)地區(qū)之一污视频久久久，位于北極圈和北回歸線之間或南極圈和南回歸線之間；以溫和的氣候?yàn)樘卣鳌?/p>

The part ''.'of'.'' the Earth's surface between the Arctic Circle and the ''.'Tropic'.''''.'of'.''''.'Cancer'.'' or between the Antarctic Circle and the ''.'Tropic'.''''.

地球上兩個(gè)地區(qū)之一，位于北極圈和北回歸線之間或南極圈和南回歸線之間日韩二区精品；以溫和''国产理论视频。

Nobody knows why, but the paint on the floor formed an arc of a circle (a centre of the circle lies inside the hall).

也不知道為什么。地板上的油漆構(gòu)成了一個(gè)圓弧人人黄色网。

To further understand the concept of a circle, distinguish the perimeter and the area of a circle..

進(jìn)一步熟記圓的概念色秀不卡视频免费，區(qū)分圓的周長(zhǎng)和面積。

Further study the names of all the parts of a circle and how to work out the perimeter and the area of a circle.

復(fù)習(xí)圓的有關(guān)知識(shí)美女视频在线网站，進(jìn)一步熟悉了圓各部分的名稱农村熟女拍拍尖叫，以及圓周長(zhǎng)和面積的計(jì)算方法。