齒質的 的英文怎麼說
中文拼音 [chǐzhíde]
齒質的
英文
dental-
Methods : we have divided the 636 molars ( without dental caries or pathological changes of root ) collected in school of forensic medicine and stomatological hospital in shanxi medicine university into four groups : maxl, max2, manl, man2, and selected 5 indexes closely related to changes of dental age ( dental attrition, contact area, the index of dentine marrow cavity, the thickness of cementum of root, the diaphaneity of dentine of root ), and proposed the grading standard and scoring standard date processing and statistical analysis after measuring the teeth of the four groups
方法:從山西醫科大學法醫學院及口腔醫院收集的636磨牙(無齲壞、無根尖病變)分為max1 、 max2 、 man1 、 man2四組,根據牙齒的增齡變化特點,篩選了5個與牙齡變化密切相關的指標(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) ,提出了指標的分級標準和評分標準,對各組的牙齒測量后進行數據處理和統計分析。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。In order to solve the problems of which the spiral bevel gear of oerlikon type is necessary to out and modify repeatedly, a new method was developed to predict the contact pattern and greatly reduce the cost for manufacturing by means of building a tooth contact analysis model of prolate epicycloids bevel and hypoid gears for oerlikon skm2
摘要為解決奧利康錐齒輪加工過程中需要反復試切、修正的問題,根據奧利康skm2機床建立了加工延伸外擺線齒錐齒輪和準雙曲面齒輪的齒面接觸分析模型,提出了一種可預測齒面接觸質量、降低設計加工成本的新方法。Along with the extensive application of carbide cotters, the study of carbide gear shaper cotters has been subjected to more and more attention in gear manufacturing industry
摘要隨著硬質合金刀具的廣泛應用,硬質合金插齒刀的研究越來越受到齒輪製造業的重視。As it is impossible to machine the helicoid gear surface with large module and a few teeth by gear generating, a four - axis milling was developed in this paper
摘要針對大模數少齒數螺旋齒輪的加工特點,結合漸開線和擺線的性質,利用微分幾何工具計算出該類曲面的法矢,作為選取球頭銑刀半徑的依據。As both the meshing point and ball ' s center are on the given cylinder, a general method for developing the cam ' s profile is studied. it is proved that the profile of positive and negative transmission is unique if the face gear, the difference between face tooth number and ball number and the diameter of ball are the same. the concrete expression of meshing cam on given spatial cycloid profile, and the characteristics of the profiles are discussed
論文的主要工作包括: 1 、根據嚙合點和鋼球中心軌跡均在同一圓柱面上的特點,研究了給定端齒齒廓條件下求解凸輪齒廓的一般方法;論證了在給定端齒、齒差數和鋼球直徑相同的條件下,正負齒差嚙合齒廓的唯一性;討論了端齒為球面擺線時,凸輪齒廓的具體表達式,並研究了該齒廓的性質。Whether it or not to improve the lubrication and dynamic performance of gear, at the same time to realize a " green lubrication " type of gear transmission of low cost, energy saving and easy maintenance by means of making use of the frication material ' s lubrication performance and meshed medium ' s elastic deformation
能不能研究一種利用摩擦副材料的摩擦潤滑特性和嚙合介質的彈性變形,實現既能改善齒輪的潤滑和動態特性的效果,又能實現低成本、節能、易維護的綠色潤滑齒輪傳動?Structural design of carbon alloy gear - slotting tool
硬質合金插齒刀的結構設計Effect of rich organic matter on paraprionospio pinnata polychaeta : spionidae on futian tidal flat in shenzhen bay
深圳灣福田紅樹林潮灘奇異稚齒蟲的富有機質效應Contains sylodenttm, an enamel - safe polishing agent that cleans your teeth and helps eliminate stains, including coffee, tea and tobacco. whitens teeth without bleaching
採用優質的sylodenttm亮潔粒子,以細致的研磨顆粒,有效去除牙菌膜及由咖啡、茶及香煙等所引起的牙垢膜而不損琺瑯質,讓牙齒潔白怡人。The process has an advanced principle. the involute hourglass worm drive can realize the design machining of gear form and direction, and the internal meshing honing gear has high efficiency. this process has all merits mentioned above, and also has the advantages of quality stability, high productivity for rude and finish machining
該工藝原理先進,它集有利於實現齒形、齒向設計加工的漸開面環面蝸桿傳動與高效的內嚙合珩齒的優點與一體,對齒輪的粗、精加工都有質量穩定、生產效率高的優點。Relation between presentation of plate bar ad quality of refining pulp, power consumption is studied. contributions for new fine bar of double disc refiner ( ddr ) is introduced
摘要研究成裝質量、打漿功率的消耗與磨片齒型的關系,簡述細齒磨片的優越性。Investigations by wolfgang m ller of the australian national university of the isotopic composition of the iceman ' s tooth enamel suggest that he had grown up in one area but spent the last several decades of his life in a different place
澳洲國立大學的繆勒研究冰人牙齒琺瑯質的同位素組成,發現冰人可能在某個地區成長,但是他死前幾十年卻在其他地方度過。When there is no or lesser undercut, we can use the bend stress ' s algorithm of involute gear to calculate approximately the bend stress of gear with meshed medium belt, what we to do is to transit the interrelated shift coefficient to the according radial minus shift coefficient of involute gear, and the error can be controlled in 10 %
在不產生或少量根切時,可用漸開線徑向變位齒輪的彎曲應力計算方法來近似計算帶式嚙合介質齒輪的彎曲應力,只需將關聯變位系數轉化為相應的漸開線齒輪徑向變位系數即可,其誤差在10 %以內。Technical supporting : new materials including high strength and high wear resistance carbides, carbides and diamond multi materials, manufacturing technologies including complicated shapes, precision press, cam etc
技術支撐:新材料技術,特別高強度高韌性高耐磨合金,硬質合金/金剛石復合材料;產品製造技術,主要是復雜形狀齒(片)的、精密成型技術,牙輪鉆集成製造技術。The paper offers a viable method for the detection and evaluation of spiral bevel gears. this method can offer reference for amending of the gear tooth surface, and possesses important scientific and applied value for actual design and manufacture
本文對航空弧齒錐齒輪副嚙合質量的檢測與評估提供了一種可行的方法,並能為齒面的修形提供參考依據,在實際設計和製造過程中有重要的科學與實用價值。The gcad system utilizes artificial neural network to mapping coefficients of the gear, establish the foundation for optimization design of the gear. by parametric design, the system realizes drawing and solid modeling. by using expert system, the gcad system can aided designer to make some scheme decision, as well as some important designing, calculating, checking, analysis and drawing, so, can improve the design quality, as well as work efficiency of the designer
Gcad系統包括參數計算、參數化繪圖、專家系統、輔助功能和幫助系統五個部分,通過matlab引擎,充分發揮了matlab及autocad各自的優勢;通過利用人工神經網路映射齒輪系數,為齒輪傳動的結構優化設計奠定了基礎;通過參數化設計,實現了齒輪的二維參數化繪圖和三維實體建模;通過將專家系統應用於gcad系統中,初步實現了集方案輔助決策、設計、計算、校核、分析以及繪圖功能於一體,提高了齒輪設計水平、設計質量和設計人員的工作效率。These springs are now eliminated and replaced by an axial non - me - tallic thrust located in the center - line of the gearing to avoid any friction that would generate wear, vibration and noise
在本系列產品中,這些彈簧已經取消,並由位於齒輪中心上的非金屬材質的軸向止推裝置所取代,避免了會導致磨損、振動和噪聲的任何磨擦現象。The results of the studies show that, when fine medium belt, proper load and velocity are selected, the transmission performance of gear with meshed medium belt is superior to invloute gear ' s ; furthermore, it can be lubricated with water, and it ' s effects are almost fine to the lubricant effects with oil. so we can realize a " green lubrication " type of gear transmission
試驗結果表明:選擇適當的介質帶材料和一定的載荷速度條件,帶式嚙合介質齒輪的傳動性能優于漸開線齒輪,並可用水進行潤滑,幾乎達到在油潤滑條件下的效果,實現一種節能、無污染的綠色潤滑齒輪傳動;相對于漸開線齒輪,帶式嚙合介質齒輪具有顯著的減振降噪作用,動態特性優越。This thesis establishes the cylinder gear and conic gear parameter serial, and analyzes their mechanics, completed the gear ' s product size - taking shape the molding size - electrode size delivers the regulation proceeded the research. establishing the design and calculation methods for the gears precision forming the craftwork parameter, forge piece, those gears precision forming perform, mould and and tool electrodes. based on the software platform of pro / engineer 2001 and visual c + +, the system is consisted of capp and cad, which are used for forming process and mould design for the gears, are studied and developed
本文對圓柱齒輪的精密模鍛和圓錐齒輪的冷擺輾成形工藝及其力學本質進行了系統的研究,分析了齒輪精密成形的影響因素,確定了齒輪零件一鍛件?電極?模具尺寸的傳遞規律,建立了齒輪精密成形工藝參數、鍛件、預制坯、模具以及電極的設計計算方法鏈。分享友人