齒尖接觸 的英文怎麼說

中文拼音 [chǐjiānjiēchù]
齒尖接觸 英文
peak contact
  • 齒 : Ⅰ名詞1 （牙; 牙齒） tooth 2 （物體上齒形的部分） a tooth like part of anything 3 [書面語] （年齡...
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 觸 : Ⅰ動詞1 （接觸） touch; contact 2 （碰; 撞） strike; hit 3 （觸動） touch 4 （感動） move sb ; sti...
  • 接觸 : 1. （交往） come into contact with; get in touch with 2. （沖突） engage 3. （挨上; 碰著） contact; touch
  1. 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。
  2. 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。
  3. On the condition of “ many - head ” and “ small drive ratio ” ， the plane double enveloping hourglass worm can not settle the problem of undercutting and sharpening simultaneously. it has devoted to a new type hourglass worm _ sphere double enveloping hourglass worm. the coordinate system is established according to the frock. the meshing equation and the tooth equation of worm and gear have been developed and the distribution of contact line on gear tooth is analyzed. to evaluate the meshing quality ， four meshing quality indexes and five original parameters are put forward. through mass programming computing ， the relations between meshing quality and original parameters are derived and depicted by graphs

    考慮到平面二次包絡環面蝸桿傳動在多頭小傳動比條件下根切與齒頂變尖的矛盾很難同時解決且嚙合性能較差，介紹了一種新型環面蝸桿傳動? ?球面二次包絡環面蝸桿傳動.在研究過程中，根據工裝建立了坐標系，根據一二包過程的運動關系推得了嚙合方程和蝸桿與蝸輪的齒面方程，分析了蝸輪齒面上的接觸線分佈.為了評價嚙合性能，提出了4項性能指標和5項原始參數，通過大量編程計算得到了嚙合性能指標與原始參數之間的關系，並以圖表直觀的表示
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