齒根高 的英文怎麼說
中文拼音 [chǐgēngāo]
齒根高
英文
dedendum of the tooth-
Results : all the five indexes ( dental attrition, contact area, the index of dentine marrow cavity, the thickness of cementum of root, the diaphaneity of dentine of root ) revealed a highly interrelated relationship with age. regression height was significant when the multiple regression equation, which was formulated with these five indexes and age and used to judge the age was statistically analyzed
結果：牙齒的磨耗、接觸區面積、牙本質髓室指數、根尖牙骨質的厚度、根尖牙本質透明均反映出與年齡高度相關關系，用這5個指標與年齡所建立的判別年齡的多元回歸方程經統計學分析，回歸高度顯著。Proceed from the angle of enhancing the backing off grinding accuracy of the special shaped convex curved rake surface, and in accordance with the enveloping theory of differential geometry and the designing model of new configured carbide gear shaper cutters, the mathematical model for backing - off and grinding the special shaped convex curved rake surface of the new configured gear shaper cutters was derived
從提高新構形硬質合金插齒刀異形凸曲前刀面鏟磨精度的角度出發，根據微分幾何的包絡理論及新構形硬質合金插齒刀設計模型，推導出鏟磨新構形插齒刀異形凸曲前刀面的數學模型。For the 30. 2mm shaft, there are still larger over measure to load. the strength is increased by optimization. for ? 17. 4mm shaft, the strength is increased by enlarge the inner dimension of the spline ; for 30. 2mm shaft, the strength is increased by adjust the structure at the boundary between the key groove and the ring groove, the highest stress of the shaft is at bottom and terminal of the spline after optimization
其中對17 . 4mm泵軸的優化，通過增大花鍵內徑，提高了花鍵齒底的強度，降低了應力集中點附近的應力；對30 . 2mm電機軸的優化，通過在軸承鍵的環槽端增加倒角，有效降低了該位置的應力集中，使軸的最大應力點從軸承鍵與環槽的交界處轉變到花鍵根部與收尾的交界處，提高了電機軸整體結構強度的合理性。Based on the fact of driven gear moving prior to normal locality when driving gear pair moving from upper dead center to lower dead center, considering all influential elements, the maximum backlash of gear pair can be controlled to satisfy the special driving requirement through controlling the length and deviation of its common normal without increasing its manufacture precision
摘要根據換向傳動齒輪副從上止點向下止點運動時被動齒輪運動超前的實際，從影響齒輪副側隙的各種因素出發，在不提高齒輪副製造精度的前提下，通過拉制齒輪副公法線長度及其偏差從而有效地控制齒輪副的最大齒側間隙，以滿足傳動的特殊要求。And at last the measurement of helical gear pump flow pulse has been presented, which include how to measure the flow pulse and the validating the theory mentioned before and to try to the solve the problems happened during the process
根據齒輪泵流量脈動的檢測要求，採用新的測試方法和手段，建立了中高壓齒輪泵性能測試裝置，並對樣機進行了性能測試。The situation and development of domestic and foreign manufacture, especially in the europe, america and asia, have been summarized and researched in the article, so the following work has been finished, and the conclusions and results are obtained as follows : through analyzing the features of movement, power and construction for the high - speed cnc gear hobbing machine in 6 - axis with four coordinated, the design methods of general arrangement, kinetics and kinematics are put forward. 1. by analyzing the severe challenge to the machine manufacture in the market, developing and managing methods of serial modular products are posed
為了給我國汽車工業和其它行業提供先進的齒輪加工設備，本文在總結、研究國內外特別是歐美國家齒輪機床現狀與發展的基礎上，進行了以下研究工作，並得出相應的結論與成果：分析了六軸四聯動數控高速滾齒機的運動、動力、結構特點，提出了六軸四聯動數控高速滾齒機的總體布局設計、動力設計、運動學設計方法；分析並根據市場對機床製造業提出的嚴峻挑戰，提出了數控滾齒機系列產品的模塊化開發方法與管理方法；在分析了六軸四聯動數控高速滾齒機模塊化設計的技術先進性與經濟性間辨證關系的基礎上，提出了產品開發過程中以邊際成本法進行經濟分析的方法。The knowledge on the properties of used materials is urgently needed for reasonable life - prediction and life - distribution. as cylinder bolts are concerned, they often rapture at the first tooth - root resulting from lower high temperature strength of their material and higher stress. since bolts operate at high temperature environment, creep skew and damage causing their failure are important factors that can not been neglected
就汽缸螺栓而言，由於螺栓材料的高溫強度偏低，預緊力過大，常常在螺栓的第一齒根部位發生蠕變脆性斷裂，因其長期在高溫環境下工作，蠕變變形和蠕變損傷是其失效的一個不可忽略的重要因素。After thoroughly analyzing the influence of each pump parameters on the gear pump performance, the paper developes the criterion for optimum gear parameters, which can be utilizied in practice easily for gear manufacturing using normal involute gear hob with two - fillet type. the conclutions studied by the paper are : 1. both the addendum coefficient and the deddendum coefficient of the pump gear should be 1. 125
以目前國內普遍使用的雙圓弧頭全齒高為2 . 5倍模數漸開線標準滾刀作為泵齒輪的加工刀具，通過對齒輪加工原理的分析，提出了欲使泵齒輪參數達到最佳，泵齒輪的齒頂高系數和齒根高系數都為1 . 125 ；對變位系數的確定應考慮到泵齒輪的根切、齒頂厚、重合度以及側隙因素；泵齒輪為避免過渡曲線干涉，必然要存在根切現象。In order to improve coal slime dewatering results and operational reliability, according to the comparison of screen bowl centrifuge ' s structural parameters, operational parameters and dewatering results used at home and broad, proposed that, proper design parameters should be determined by the property of coal slime ; the separation factor and manufacture level of homemade screen bowl centrifuge should be improved ; the research on sieve and wear parts should be strengthened to improve the service life of wear parts ; planetary gear differential case should be used to improve the work reliability of whole machine and the automatization level of centrifuge control should be enhanced
為提高國產離心機用於煤泥分離的效果和工作可靠性，通過對國內外同類產品的結構參數、操作參數和分離效果的比較，提出：根據國內洗選煤泥性質，確定合適的設計參數；提高國產離心機的分離因數和製造水平；加強對篩網及易磨損件的研究，提高易磨損件的使用壽命；採用漸開線行星齒輪差速器，以提高整機的工作可靠性；提高離心機控制的自動化水平。Analysis is done to the situation and gap of the carding clothing both at home and abroad in regarding their design, material selection, manu precison and quenching durobility for the requirement of modern machines. references is given to chinas manafacture of the same
根據當代清梳聯高產梳棉機對關鍵梳理元件的要求，從配用的錫林、道夫針布齒條的設計、原材料選用、製造精度、淬火硬度入手分析了國內外的現狀及差距，並通過對國外知名針布公司的相關介紹，為我國針布齒條製造技術進步提供了可靠的依據。Abstract : analysis is done to the situation and gap of the carding clothing both at home and abroad in regarding their design, material selection, manu precison and quenching durobility for the requirement of modern machines. references is given to china ' s manafacture of the same
文摘:根據當代清梳聯高產梳棉機對關鍵梳理元件的要求，從配用的錫林、道夫針布齒條的設計、原材料選用、製造精度、淬火硬度入手分析了國內外的現狀及差距，並通過對國外知名針布公司的相關介紹，為我國針布齒條製造技術進步提供了可靠的依據。The machine can be equipped with simens 802c cnc system according to user ' s request to cut crown and slightly tapered gears
根據用戶和特殊要求可配置西門子802c數控系統，完成鼓形齒和小錐度錐齒輪的加工，還可以將機床加高、加長擴展機床的加工范圍。Objective : to analyze the data of the permanent teeth caries and treatment needs of six age groups people in beijing with statistical methods which came from the second national oral health survey of china in 1995. method : the total sample of 12792 ( 8520 urban, 4272 rural ) for 6 age groups ( 5, 12, 15, 18, 35 - 44, 65 - 74 - year - old ) were examined. the diagnostic criteria recommended by the world health organization were used in this study ( oral health survey basic methods third edition, 1987 ). result : the dmf and dmft incidence of six age group in the urban was higher than that in the rural on the whole. the dental caries level of 12 - year - olds was very low. f percentage of 12 - year - olds was 15. 42 % ( urban ) and 3. 23 % ( rural ). the current situation of chinese dental care cannot meet the who objectives for the year 2000. conclusion : it pointed out that we should emphasize oral health education and enhance the consciousness of health care. since the treatments of caries became more complicated with the age, we should perform the primary oral health care in the early stage
目的:本文對1995年第二次全國口腔健康流行病學調查中，北京地區六個年齡組人群的恆牙患齲及治療需要情況進行統計學分析.方法:採用整群抽樣方法，對北京市六個年齡組的城鄉人群12792人（城市8520人，農村4272人）進行了口腔檢查，診斷標準根據世界衛生組織1987年第三版一書.結果:各年齡組的患齲率及齲均基本是城市高於農村， 12歲年齡組的患齲情況處于很低水平， 12歲年齡組恆牙充填率為15 . 42 （城）和3 . 23 （鄉） ，結論:本結果離2000年目標有一定差距，提示我們應加強口腔健康教育，提高居民口腔保健意識.另外，隨年齡的增長牙齒治療的復雜程度逐漸增高，因此，應在人群中開展初級口腔衛生保健，做到早發現，早診斷，早治療Compared with the traditional cantilever structure, the bearing life of two - terminal bracing structure is improved by 17. 51 times, while the contact stress of gear tooth is reduced by 45. 7 %, and the bending stress of gear tooth is reduced by 62. 8 %
與傳統主動齒輪懸臂結構相比兩端支撐結構的軸承壽命提高了17 . 51倍、輪齒接觸應力降低45 . 7 % 、輪齒齒根彎曲應力減小62 . 8 % 。Compared with a standard involute gear, the unsymmetric involute gear could efficiently improve the tooth root bending strength by finite element analysis
對實例的有限元分析表明非對稱漸開線齒輪的齒根彎曲強度比對稱齒輪有較大提高。5 ) using the practical products, we have done experiments and comparisons on designing and generating tooth, testing the contact ratio, tooth root stress, vibration and noise for the high contact ratio spiral bevel gears
摘要5 ）採用實驗研究技術，結合實際產品，進行了高重合度弧齒錐齒輪的設計、切齒、重合度測試、齒根應力測量、振動和噪聲測量等大量對比實驗。This thesis gives a brief introduction to basic theory of wind power, construction of wind farm and commissioning and operation of wind turbine by illustrating the 3rd phase extension project of ningxia electric power group co., ltd helanshan wind fram. based on the specific study on the engineering construction and the domestically and globally popular 850kw wtg, further by comparasion of the power output rate of g52 and g58, we can prove that with substitute of new material and new technology, larger capacity wtg will become popular. especially when the running diameter of blades enlarged, more power produced at same wind speed ; and the high efficiency will be further guaranteed if the gearbox, major shafting equipment be checked and maintained regularly
根據對實際工程建設的具體研究，對我國及國際上主導機型850kw風機的具體分析，以及對g52和g58風機輸出功率的比較，更進一步證明在新的技術和材料替代下，更大型的風力發電機組將會替代現有主導風機機型，特別是在風機葉輪轉動直徑增大后，相應的輸出功率在同等風速下會有明顯增加，更好的利用風能並轉變為電能;齒輪箱作為風機中主要傳動設備，只有按維護要求並根據實踐經驗定期檢查易損部件，才能使風機安全高效的運行，提高風機的經濟運營效率。Secondly, in order to improve the effective of machining process, for the tool - path planning, this system come up with a way which both tool arm coordinate the movement in the same time, and used the process pattern of move toward opposite side and cutting in row, avoided the cutting tool interference effectively ; for this tool - path this paper use the way of making the cutter contact data by the second development of solidworks, and gained the cutter location data through the interference check
其次，為了提高磨削效率，在刀具路徑規劃方面，採用了雙刀協調運動、相向走刀加工的加工方式，採取變形的「之」字形走刀模式，從而有效的避免了刀具干涉，提高了加工效率。並針對上述的加工方式，對刀位軌跡生成演算法進行了研究，根據機構的特性，基於截面法生成刀具軌跡，通過solidworks的二次開發來獲得牙齒模型的三維表面數據，再利用干涉檢查生成無干涉刀位點數據。分享友人