【正文】 that is ,a righthand driver goes with arighthand the design of crossedhelical gears, the minimum sliding velocity is obtained when the helix angle are , when the helix angle are not equal, the gear with the larger helix angle should be used as the driver if both gears have the same gears are similar to crossed helical pinion or worm has a small number of teeth, usually one to four, and since they pletely wrap around the pitch cylinder they are called mating gear is called a worm gear, which is not a true helical worm and worm gear are used to provide a high angularvelocity reduction between nonintersecting shafts which are usually at right worm gear is not a helical gear because its face is made concave to fit the curvature of the worm in order to provide line contact instead of point , a disadvantage of worm gearing is the high sliding velocities across the teeth, the same as with crossedhelical gearing are either single or double singleenveloping gearing is one in which the gear wraps around or partially encloses the worm..A gearing in which each element partially encloses the other is, of course, a doubleenveloping worm important difference between the two is that area contact exists between the teeth of doubleenveloping gears while only line contact between those of singleenveloping worm and worm gear of a set have the same hand of helix as for crossed helical gears, but the helix angles are usually quite helix angle on the worm is generally quite large, and that on the gear very of this, it is usual to specify the lead angle on the worm, which is the plement of the worm helix angle, and the helix angle on the gear。GEAR AND SHAFT INTRODUCTIONAbstract: The important position of the wheel gear and shaft can39。這些 磁極板之間有磁粉混合物潤滑。該內軸件，在它的周邊加工了數個平面。這些離合器通常用彈簧加載，以使得在達到預定的力矩時釋放。雖然強制離合器不像摩擦接觸離合器用的那么廣泛，但它們確實有很重要的運 用。各種強制接觸離合器之間最大的 區(qū)別與夾爪的設計有關。各種各樣的離合器和制動器可作如下分類： 1．輪緣式內膨脹制凍塊； 2．輪緣式外接觸制動塊； 3．條帶式； 4．盤型或軸向式； 5．圓錐型；6．混合式。這是一 個靜力學問題。簡化摩擦離合器或制動器的 動力學表達式中，各自以角速度 w1 和 w2 運動的兩個轉動慣量 I1 和 I2，在制動器情 況下其中之一可能是零，由于接上離合器或制動器而最終要導致同樣的速度。這 樣，它是一個檢驗已經設計好了的軸的或者發(fā)現具體軸在運轉中發(fā)生損壞原因的好方 法。但決不意味著設計者要保證；它們是安全的，軸 幾乎總是要進行計算的，知道它們是處在可以接受的允許的極限以內。心軸也是軸，既可以旋轉也可 以靜止的軸，但不承受扭轉載荷。在軸上安裝像齒輪，皮帶輪，飛輪，曲柄，鏈輪和其他動力傳遞零件。這樣的齒輪機構叫做準雙曲面齒輪機構，因為它們的節(jié)面是雙曲 回轉面。直齒錐齒輪易于設計且制造簡單，如果他們安裝的精密而確定，在運轉中會產生 良好效果。僅就滾齒而言就可達一級精度。蝸桿上的齒斜角度通常很大，而蝸輪上的 則極小，因此習慣常規(guī)定蝸桿的導角，那就是蝸桿齒斜角的余角；也規(guī)定了蝸輪上的 齒斜角，該兩角之和就等于 90 度的軸線交角。單包圍機構就是蝸輪包裹著蝸桿的一種機 構。蝸桿和蝸輪通常是用于向垂直相交軸之間的傳動提供大的角速 度減速比。然而當該齒的斜角不相等時，如果兩個齒輪具有相同齒向的話，大斜角齒輪應用作主動齒輪。交錯軸斜齒輪與斜 齒輪之間在被安裝后互相捏合之前是沒有任何區(qū)別的。當兩個或更多個單向齒斜齒輪被在同一軸上時，齒輪的齒向應作選擇，以 便產生最小的軸向推力。斜齒輪使軸的軸承承受徑向和軸向力。斜齒輪輪齒的 初始接觸是一點，當齒進入更多的嚙合時，它就變成線。齒的形狀是一濺開線螺旋面。而在錐齒輪的情況中各回轉軸線互相不平行。所以我們對齒輪和軸的了解和認識必須是多層次多方位的。 Smith, 1967。作者：蘇尼爾國籍：美國出處：《美國商業(yè)學術期刊》，2004年9月，第5259頁原文A Review of Employee Motivation Theories and theirImplicationsfor Employee Retention within OrganizationsWhy is it Necessary to Retain Critical Employees?Fitzenz(1997)stated that the average pany loses approximately $1 million with every 10 managerial and professional employees who leave the with direct and indirect costs, the total cost of anexempt employee turnover is a minimum of one year’s pay and benefits, or a maximum of two years’ pay is significant economic impact with an organization losing any of its critical employees, especially given the knowledge that is lost with the employee’s is the knowledge that is used to meet the needs knowledge to enhance organizational performance(Bassi, 1997).Furthermore, Toracco(2000)stated that although knowledge is now recognized as one of an organization’s most valuable assets most organizations lack the supportive systems required to retain and leverage the value of cannot afford to take a passive stance toward knowledge management in the hopes that people are acquiring and using knowledge, and that sources of knowledge are known and accessed throughout the , organizations seeking to sustain petitive advantage have moved quickly to develop systems to leverage the value of knowledge for this purpose(Robinson amp。他的定義很簡單“技能通過承諾而增加”()，智力資本的重要性等于知識，技能和每一個人在組織中的屬性乘以他們愿意努力工作。人力資本理論還認為員工在一個組織的服務長度可以作為與職業(yè)相關的知識或能力的代表。這些技能，知識和經驗代表了資本，因為它們提高了生產率(Snell and Dean, 1992)。 Stern, 1997。知識的管理是創(chuàng)造、捕捉的過程以及知識來提高組織績效的進程。第三篇：畢業(yè)論文外文翻譯譯文組織為留住員工的激勵理論以及它們的應用的研究為什么必須要留住關鍵性的雇員？Fitzenz（1997年）提出，公司每失去10個管理上和專業(yè)上的員工就會損失100美元。他說，盡管如此，房地產開發(fā)商以及供應過剩行業(yè)的制造企業(yè)仍會不時地面臨由政策引發(fā)的再融資不確定性。分析人士說，除了房地產，地方政府借的貸款將為銀行帶來更大的挑戰(zhàn)。從2009年到2011年這三年里，中資銀行共發(fā)放了25萬億元以人民幣計價的貸款，其中約有40%的貸款流向了政府主導的基建項目和樓市。中國建設銀行表示，在該銀行的所有不良貸款中，與房地產業(yè)有關的不良貸款同比上漲了20%。中國最大的非國有銀行中國民生銀行(ChinaMinsheng Banking Corp.)2011年不良貸款增加了人民幣2億元。 Commercial Bank of China Ltd.)（），中國第二大銀行中國建設銀行(China Construction Bank Corp.)。只有在一段時期后，中國宏觀經濟形勢的影響才會在銀行的營收中有所體現。Nonperforming loan levels are though they are higher than before, the amount is small and [the rise] is likely to be temporary,39。 he in Hong Kong, China Construction Bank Chairman Wang Hongzhang said he39。 Poor39。The second quarter of this year will be one of the peak seasons for the repayment of property loans and local government a slowing economy, we can expect that higher nonperforming loans are on the cards,39。s banking sector edged up percentage point in the fourth quarter from the third quarter, the first rise in the past six regulator didn39。s largest bank by assets, saw itsnonperforming loans rise by billion yuan(about $606 million)in the fourth quarter。s secondlargest it indicating that banks are resilient to the economic downturn?Not banks have a tendency to be lagging after a certain amount of time has passed will China39。s Banks and the Slowdown摘要: Chinese banks39。根據經驗，可納入危險管理系統(tǒng)的危險值為：低于160時的危險，否則，它會被認為是不可承受的危險事故。（9）發(fā)揮媒體的咨詢作用，進行系統(tǒng)的安全性評估、設計、安全監(jiān)測、認證和考試，以及意外傷害保險賠償。（7）開展風險規(guī)避。（3）編制依據不同專業(yè)的職業(yè)經理人的安全的安全生產監(jiān)管部根據建筑由大小的地盤遵守《組織對構建企業(yè)安全生產和職業(yè)經理人準備》。政府提出安全建設模式位“統(tǒng)一的模式，法律監(jiān)督機構負責企業(yè)所有安全監(jiān)管，部分群眾以及整個社會參與監(jiān)督”。根據他們的實際經驗，根據不同情況獨立變量的值，給出了三被標記的對象，然后在危害水平也分為公式后的危險值來計算。安全文化是燦爛的，華民族文化的組成部分，華民族在生存和繁衍，}，與世界其他民族一起創(chuàng)造并傳播了安全文化。安全管理機構進一步健全，建立健全了一大批國際的、國家的、行業(yè)的、社會的、企業(yè)的安全管理機構。安全文化從核安全文化、航空航天安