切线

带有给定切线多边形的保形非均匀B样条曲线

Non-Uniform Cubic B-Spline Curve with Given Tangent Polygon

也就是，在单位圆上，F是曲线的切线。

So , on the unit circle , F is tangent to the curve .

乳腺癌术后放疗乳腺切线野的CT模拟定位研究

CT-simulation based localization of tangential irradiation field on the breast after breast conserving surgery

带式输送机端部滚筒母切线高度h1确定方法的理论研究

Study on Determinating Method of Height h_1 of Main Tangent-line on Terminal-drum of Belt Conveyors

布水喷头采用对喷旋转切线式ABS材质。

The water distribution sprayer adopts counter spray whirl tangent type ABS material .

这里，△r应该是近似等于。。。，它的方向是轨道的切线方向。

And now , delta r should be essentially roughly equal to , well , its direction will be tangent to the trajectory .

dy的这个定义假定次切线的一些表达式。

This definition of dy presumes some expression for the subtangent .

结论胸膜结核球结合完整的病史；依靠切线位片、CT及胸部透视即可诊断。经积极的抗结核治疗可避免手术。

Conclusion Dignosis of pleural tuberculoma need an integrated history , tangential position X-ray film , CT and fluoroscopy of chest and sufficient antituberculous treatment may avoid operation .

讨论与给定切线多边形相切的分段三次Bézier曲线，所构造的曲线是C2连续的闭曲线，且对切线多边形保形。

A method is presented for constructing piecewise quadratic rational B é zier curve with given tangent polygon .

切线距离中选取切线向量的SVD方法

SVD Method for Selecting Tangent Vector in Tangent Distance

确定少齿差内齿轮副变位系数的切线法一个比Newton法收敛快而稳的两点切线法

Newton Method for Determining the Addendum Modification Coefficient of Internal Gear Pair with Small Difference in Number of Teeth

探讨了零初始位移法和切线初始位移法之间的关系，采用ANSYS有限元软件对悬臂结构进行了两种位移求解法之间关系的验证。

The relationships between zero-initial-displacement method and tangent-initial-displacement method are discussed and verified in allusion to cantilever structures with the finite element software ANSYS .

它包括单轴拉伸时的应力－应变曲线，最大切线模量E（此曲线直线段的斜率），抗拉强度民，极限应变εb等参数。

The parameters include the stress-strain curve , the maximum tangent modulus E ( the slope of lin-ear segment ) in the curve , the tensile strength b , and the ultimate strain .

RT线测量：上下椎体外缘的切线至钩突关节最外侧点垂直距离，即RT线。

RT line was measured from cutting-line of lateral cortical margins of the cervical vertebra to outer cortical margines of Luschka 's joints .

基于非线性有限元理论，采用全拉格朗日（TotalLagrange）描述法，考虑高阶非线性项的影响，推导了空间梁单元的几何非线性切线刚度矩阵。

Based on the nonlinear finite element theories , this thesis adopts Total Lagrange description to deduce geometric nonlinear tangent stiffness expressions for spacial frame , considering effects of high nonlinearity .

根据经典的一维搜索算法对分法和Newton切线法的基本原理，提出了一种新的一维搜索算法水平割线法。

According to the primary principles of the half division method and Newton method , a new method called horizontal secant method was presented for one dimension search .

将重组腺病毒质粒用PacⅠ酶切线性化后，脂质体介导转染293细胞进行腺病毒的包装。

The recombinant adenoviral plasmids were subsequently linearized with Pac ⅰ and transfected into 293 cells mediated by lipofectin to generate the desired recombinant adenoviruses .

本文论述了断裂力学中的切线模量理论的基本框架，提出了求解非线性断裂临界应力的新方法&切线模量因子算法，并对该方法同现有的COD法作了理论上和计算上的比较。

The basic frame of the theory of tangent modulus in fracture mechanics is builded , and the new method of tangent modulus factor to calculate nonlinear critical fracture stress is presented .

根据试验结果，建立此3种应力路径下岩体切线弹性模量Et与主应力差间的经验关系式，分析边坡岩体的变形特性。

Based on the testing data , the relationships between the elastic modulus and the principal stress difference under such loading paths are acquired , and the deformation properties of the slope rock mass are analyzed .

zier曲线上锥面、切线曲面以及复杂曲面的展开方法。首先，构造了C-B？

The methods of development for cones and tangent surface on C-B é zier curve and the complex surfaces are obtained .

根据经典率无关弹塑性模型的Euler向后完全隐式积分算法提出了非饱和多孔介质化学-水力-力学耦合本构模型的隐式积分算法并推导了一致性切线刚度阵。

Based on the definition of implicit Euler backward integration scheme for standard plasticity , an implicit integration algorithm and the consistent tangent moduli are presented for the chemo-hydro-mechanical constitutive model .

本文采用Timoshenko梁柱理论，推导出网壳杆件的切线刚度矩阵。

In this paper , a tangent stiffness matrix of members of latticed shell was derived on the basis of using Timoshenko 's beam-column theory .

基于切线轮廓误差坐标理论，提出了优化切线轮廓误差估算方法，创建了自由曲线优化轮廓误差模型，分析了CNC多轴空间轮廓误差，为减小轮廓误差提供了理论依据。

Based on tangent contour error coordinate theory , the estimation method of tangent contour error is raised , the model of free curve optimization contour error is created , the spatial contour error of multi-axis CNC is analyzed .

非实时动态测量采用KIRSCH算子法和非极大点抑制法对微血管边缘进行检测和细化处理，利用切线法测量管径。

In non-dynamic measurement , with kirsch operator method and non-maximum restrained method the microvessels edges were measured and thinned .

将pGEM-T-easy质粒酶切线性化，37℃体外转录120min合成地高辛标记的TAP-RNA探针。

The Digoxin-labeled RNA probe of TAP was in vitro transcripted using pGEM-T-easy .

利用Green应变张量在随动坐标系中建立一维桁架单元的精确全量平衡方程，然后将其转化成固定空间坐标系中的全量平衡方程，并由此导出精确的切线刚度。

In the paper , the accurate total equilibrium equation of one dimensional lattice element in the coordinate has been given by using Green Strain Tensor , then it is changed into one in the fixed three dimensional coordinate , so we can get the accurate tangent stiffness matrix .

采用Lagrange轴向应变的表达式建立了索元轴向应力、应变的的直接关系，并基于Lagrange插值描述的位移模式和虚功原理得到了索元的非线性平衡方程和切线刚度矩阵。

By means of the virtual displacement principle and the Lagrange expression of the axial strain , the nonlinear finite element formulation has been derived , and this model has been used to compute cable structures .

本文根据最小势能原理推导了一个高精度、高效的梁柱MEP单元，并且导出了该模型的割线和切线刚度矩阵。

MEP element model described explicitly is formulated by using the principle of minimum potential energy , and the secant stiffness and tangent stiffness of MEP element are educed .

记住昨天提到过的，Fdr的线积分，或者F•，因为这些向量都是圆的切线。

Well , remember we said yesterday that the line integral of F dr , Tds maybe I should say F dot T ds now , because the vector field is tangent to the circle .

在传统基于切线刚度的Newton-Raphson法求解方程组基础上进行适当地改进，采用基于割线刚度的Newton-Raphson法，并绘制了流程图。

Through properly improving the Newton-Raphson method of solving system of equations based on the tangent stiffness , this paper presented Newton-Raphson incremental-iterative mixed method based on the secant stiffness .