narrow groove 中文意思是什麼
narrow groove
解釋
雙螺旋的-
His mind works in a narrow groove.
他心地狹隘。 -
Abstract : this artical presents the principle and equipment for slotting large modulus gear with helical teeth and herringbone gear with narrow slot cutter groove
文摘:介紹了在大型普通滾齒機上插削大模數斜齒輪和小空刀槽人字齒輪的原理與裝置。 -
Disigning coolant channel on the firebox of liquid rocket engine to loxodrome ( equal - angle helix ) groove can improve firebox coolant capability greatly. because the width dimension of loxodrome groove is narrow and the depth is deep, some machining methods are incapable, such as end - milling or electrochemistry. according to the peculiarities, a cnc disk - cutter - milling method which is composed of five motion axes with four simultaneously interpolated ones is researched. because most firebox generatrix is composed of complex curves, it is very difficult to get cnc cutting program with manual means. in order to deal with the problem, the loxodrome mathematics model is studied, and an auto - programming software system is developed. the software system can generate cnc cutting program of loxodrome on many kinds of turned surface. the constriction - distension segment of firebox is the most representative workpiece. the sharp changing of its generatrix slope makes loxodrome milling difficult. with the theory analyzing and practice cutting experiment, some applied techniques, which include milling mode and direction, choosing cutter diameter and cutting start point setting, are developed. adopting the technology above, tens regular workpiece have been manufacturing. the two - year manufacture practice has confirmed the validity and feasibility of developed loxodrome coolant channel milling method. the developed technology is also worth to be referenced to other similar workpiece
將液體火箭發動機燃燒室的冷卻通道設計為斜航線（等傾角螺旋線）槽形，可以大幅度改善燃燒室的冷卻性能.斜航線冷卻槽的槽寬尺寸較小而槽深尺寸較大，所以無法使用棒銑刀銑削、電化學等加工方式.針對這些特點，提出了五軸控制、四軸聯動的數控片銑刀銑削加工方法.由於燃燒室外表面的母線輪廓復雜，手工編制數控加工程序難度大.為了解決數控加工程序的編制問題，研究了斜航線的數學模型，開發了自動編程軟體系統.使用該系統，可以生成多種母線輪廓回轉體外表面上的斜航線數控加工程序.燃燒室收斂-擴張段的母線斜率變化大，加工難度大，是斜航線冷卻通道加工的最典型工件.經過理論分析和實際切削實驗，研究了針對該類型工件的片銑刀直徑選擇、銑削方式和方向、刀具調整和起刀點的設置等多項實際的加工方案.採用上述的一系列技術，已經成功地加工了數十個合格工件.經過兩年多的實際生產過程應用，驗證了所開發的斜航線冷卻通道加工方法的正確性和可行性.這些加工技術的研製成功，對其他相似類型零件的加工亦具有參考意義 -
From the three dimensional structure of arc1 can be found a wide groove and a narrow groove, which may be the binding sites of other proteins
在預測的arc1蛋白質高級結構中，發現的大溝和小溝可能為其它蛋白質的結合提供了結合位點。 3 -
Endless narrow v - belts for the automotive industry ; dimensions of belts and pulley groove profiles
汽車工業用無端頭的v形傳動帶.傳動帶和帶輪槽剖面尺 -
Appointing to the characteristic and operating condition of hydrogen compressor, the carrying capacity, the leakage and the film thickness of the dry gas seal are calculated by the theory of narrow groove
針對氫氣壓縮機的特點和具體的操作條件，利用窄槽理論對所設計的干氣密封進行了承載力、泄漏量及膜厚的計算。 -
Especially, the pneumatic ? measuring technique has a special priority on measuring inner and outer diameter of some thin wall parts and soft material parts, such as inner diameter of deep hole and small hole as well as narrow groove breadth which are measured difficultly by mechanical gauges and instruments
特別是在薄壁零件和軟材料零件內外徑尺寸測量、某些機械量具和量儀難于進行的測量，如深孔內徑、小孔內徑、窄槽寬度測量等方面有其特有的優勢。 -
The basic principal and general structure of dry gas seal are introduced briefly, and aiming at the characteristics of logarithm spiral curve, the calculation of the pressure to the spiral groove end surface by the theory of narrow groove are given. the method of narrow groove theory and finite element method are utilized to optimize the end surface structure of the spiral groove dry gas seal. the structure of the seal is confirmed on the base of the result
簡要介紹了干氣密封的基本原理和一般結構，同時針對對數螺旋線形的特點，介紹了窄槽理論對螺旋槽端面的壓力分佈計算，利用窄槽理論和有限元方法對螺旋槽干氣密封端面結構進行了優化，並得出了優化結果，根據這一結果，確定了具體的密封結構。 -
And we also know the depth of the groove should not be too shallow ; the width of the groove should be widened relatively, and the space of the interaction area should not be too narrow
槽深不能太淺，槽口寬應該適當取大些，中心互作用空間不宜太窄。
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