凹圓線 的英文怎麼說
中文拼音 [āoyuánxiàn]
凹圓線
英文
cove-
With the concavity and integrability of sublinear terms near zero, the symmetry results for a class of sublinear elliptic equations are given by making use of the moving - plane method
本文利用次線性項在零點附近的凹性和可積性，用移動平面法給出了一類次線性橢圓方程正解的對稱性As a new type gear transmission, double circular arc profile bevel gearing carries out its transmission by means of meshing between convex - concave tooth profile in both of the direction of tooth trace and the direction of tooth depth, so it has advantage of high load capacity, long service life, easy forming hydrodynamic oil film between teeth as well as high quality of running - in etc. therefore, more attention has been paid to its application and research in recent years
作為一種新型齒輪傳動方式，雙圓弧弧齒錐齒輪傳動不論在齒線方向、還是在齒高方向，均為凸、凹齒廓相嚙合，因而它比一般的弧齒錐齒輪傳動的承載能力高，使用壽命長；並且在嚙合過程中兩齒面間容易形成潤滑油膜，具有良好的跑合性能，所以對它的應用和研究日益受到人們的重視。Hard alloy die is made y taking high - quality hard alloy as its nips and fastening with steel die case. it is characterized by high hardness, good thermal conductivity, brasive coefficient and strong resistant to corrosion. it is suitable for drawn metal wire, bar and pipes. the types of dies includes rectangle, hecagon, octagon, diamond, trapezoid, basin and knob, u - shaped and half round types
硬質合金模具採用優質合金作模芯，並用鋼質模套緊固，具有硬度高，導熱性能好，磨擦系數小，抗腐蝕性等特點，適用於拉制金屬線材，棒材，管材等，另外，模具的類型有矩型、六角型、八角型、菱型、梯型、凹型凸型、馬蹄型、半圓型等各種異形模。Dimple - a concave depression found on the surface of a wafer that is visible to the eye under the correct lighting conditions
表面起伏-在合通下線光的適過肉眼可以發現的晶圓片表面凹陷。Based on the search - extend - method ( sem ) that proposed by c. m. chen and z. q. xie for computing multiple solutions of nonlinear elliptic equation, this paper introduces the fem and the interpolated coefficient finite element method into the sem and calls this improved version as isem. isem not only can reduce our expensive computation greatly but also can be generalized to non - odd nonlinearity cases as well as many different domains ( including the concave domains )
本文在c . m . chen和z . q . xie提出的一種全新的計算非線性橢圓型方程多解的搜尋延拓方法sem的基礎上，引入了有限元方法和插值系數方法，改進后的sem （稱為isem ）大大減少了計算量，並且將原方法推廣到非奇非線性情形和多種區域（包括凹域）上。In the algorithm, the convexity - concavity of vertexes and arcs must be identified, and a fast approach for identifying the convexity - concavity of line - arc closed curve is proposed. firstly, the orientation of a closed - curve is determined by constructing a new convex polygon. secondly, by using the orientation of the closed curve the convexity - concavity of vertices and arcs are identified
在演算法實現過程中，由於需要對圓弧和直線段組成的封閉曲線的頂點、圓弧的凸凹性進行判定，本文提出了一個圓弧和直線段組成的封閉曲線凸凹性快速判定方法，該方法首先通過構造一中介凸多邊形求出封閉曲線的方向，然後根據封閉曲線方向確定頂點及圓弧的凸凹性，進而確定封閉曲線的凸凹性。分享友人