An ultrasonic crossjet with a non - symmetric laval cavity is designed based on the aerodynamic theory 根据气体动力学原理设计了一种超音速非对称拉法尔腔体结构的喷嘴，并建立了喷嘴内部拉法尔曲线方程。
Nurbs curve equation has three kinds of the equivalence form , i . e . rational fraction , rational base function and homogeneous coordinate Nurbs曲线方程具有三种等价形式：有理分式表示、有理基函数表示和齐次坐标表示。
This thesis puts forward the differential equation and curvilinear equation of stay cabls , and anayles the relevant , with unique visual angle 摘要从独特的视角给出了斜拉索的基本微分方程和曲线方程，并对相关结果进行了分析。
A kinematic chain portion composed of two linkages and three lower pairs are taken as primary cell and classified into different schemes 摘要给出了机构基元的定义，提出了连杆机构工程语义的描述方法，实现了基于工程语义的机构轨迹曲线方程的算法。
The connected curve equation after spreading connected joint of taper container are derived ， the new blanking method with computer is put forward 导出了圆锥形容器接管交线在展开接管表面后的曲线方程，提出了用计算机绘制其交线，即放样下料的新方法。
Through research into space curve , get the equation of space curve , then reason the method of path programming according to the motion space of the manipulator 通过空间曲线的研究，得出空间曲线方程，然后结合机械手的可达空间，得出机械手的路径规划。
Given a group of the attractive interactions " values , the isothermal sectional diagrams and the vertical sectional diagrams of the typical phase diagram of the ternary system ( e . g . the “ even crystal ” type ) are obtained 液两相平衡曲线方程的表达式，给定势参数后，得到了典型的三元系统固液相图（如，匀晶相图）的水平截面图和竖直截面图。
Study the broad sense description and the estimation of the equation parameter of p - s - n curve . study the estimation method of the reliability range of the materials fatigue life under given reliability correspond to different stress level 并利用数理统计理论，探讨p - s - n曲线的广义描述方法， p - s - n曲线方程参数的估计方法，以及对应不同应力水平下的材料疲劳寿命在给定置信度下的置信区间估计方法。
Finally , by comparing with the predicting results of 5 engineering examples , the prediction results of compertz curve equation are proved to be better and more stability than other methods , and the prediction method of multi - model is feasible 通过对5个工程实例的预测比较，证明龚帕斯曲线方程有很好的预测效果，有较好的稳定性，可用于工程实践；同时也说明多模型的预测方法和判别标准是符合实际的。
By means of discussing plane symmetry that relates to point , curved surface and curve in a three - dimensional space , this paper gives a method to study point 、 curved surface 、 plane symmetric point on a curve 、 symmetric curved surface and symmetric curve equation 摘要讨论了三维空间中，点、曲面、曲线关于平面的对称问题，从而给出了求点、曲面、曲线关于平面对称的对称点、对称曲面、对称曲线方程的方法。
