一个凹函数的图象总在它的切线的下方。
The graph of a concave function is always below its tangent.
这一点和圆心的连线平分这两条切线的夹角。
The line connecting the point and the center bisects the included Angle of the two tangent lines.
讨论了圆的切线及两圆内外公切线的一般求法及步骤。
The general ways and procedures of working out internal and external co-tangents of circles are discussed.
在射影几何的范畴内，全面地论述了两二次曲线的公有点和公切线的图解问题。
This paper deals with the graphics of the intersections and common tangents of two conics according to projective geometry .
服装结构制图应遵循切线原则：结构图中的线与线相连接处应符合切线的原理。
The tangent line principle should be followed in the structure charting of garments, i. e. the places where lines link up in the structure charting should accord with the tangent principle.
利用《高等几何》的观点、方法解决《解析几何》中的二次曲线的切线的存在性与求法问题。
To solve the problem about determinant and solution to tangent line of curve of second order in Analytic Geometry with viewpoint and methods of Higher Geometry.
本文叙述了某电机厂自动剪切线的工作原理，分析了原生产线上存在的问题，提出了解决问题的方案。
The paper tells us the working theory of the automatic-cutting line in an electric machinery factory, analyzes the problems on the line and puts forward the solution.
根据零件的孔、槽等剖切特征，提出基于优先度和基于图遍历的两种自动搜索关键特征产生剖切线的算法，并分别结合实例进行了比较。
This paper proposes two algorithms based on priority analysis and graph traversal respectively to automatically choose the section cut of key features such as holes and slots.
如果你想要严格的近似等式,那就意味着我们要用切线逼近来取代原函数。
If you want strict equalities in approximations means that we replace the function by its tangent approximation.
我个人比较喜欢用这个工具，而不是将路径转换为选区的方法，因为这样我就不需要去调整控制点和切线，尽管这中方法意味着更多地敲击鼠标。
I personally prefer this tool over the paths approach to selection because I don't have to adjust any control points and tangents, even though it means a lot more clicks.
松散岩块的切线模量和割线模量均与轴向应变呈指数相关性。
Both the tangential modulus and secant modulus are exponential with axial strain.
稳定的自动切线功能提高了工作效率。
The steady automatic tangent line function has improved working efficiency.
本文给出了切线极坐标下的齿轮啮合方程式。
The mesh equations of gears are given by tangent polar coordinate system.
上盘岩块相对地变动不大，而其下的矿石带却具有许多切线运动的证据。
The hanging wall block is relatively little disturbed, but the ore zone beneath bears abundant evidence of tangential movements .
本文采用状态平衡方程推导出用超越函数表示的空间索单元切线刚度矩阵的精确表达式。
The precise tangent stiffness matrix of space cable element is derived in this paper by using equilibrium equation.
推演了索单元的切线刚度矩阵，建立了斜拉桥施工控制计算的几何非线性模型。
The paper deduces tangent stiffness matrix and set up geometrical nonlinear model of construction control calculation of the cable-stayed bridge.
只有切线方向的位移间断，而法线方向位移连续的弱界面称之为滑动界面。
The imperfect interface with a continuous normal displacement and a jumped tangential displacement is called a sliding interface.
采用锯机连同带锯条一起以带锯条工作边锯齿齿尖连线为中心作回转摆动的方法，实现带锯条始终沿着锯切曲线的切线方向进行锯切。
By the method of sawing and saw blade swing taking the line of saw-teeth of saw blade's working side for centre, saw blade always works toward the tangent of sawing curve.
SVG可以使图像转向，以便它总是面向它所移动方向的切线。
SVG can turn an image so it always faces the tangent of the line it is following.
画出该曲线两个分支的两条切线。
考虑了常规三轴试验和各向同性压缩试验对切线体积模量的影响。
The different influences on tangent bulk modulus of conventional triaxial test and isotropic compression test were considered.
在曲面数字化方面，提出基于曲面曲率和被测点切线斜率的自适应采样规划。
During digitizing, the adaptive sampling planning method based on the curvature of surface and the slope of tangent line of measured point is proposed.
建议停用耳前野加全颈切线野的照射方式。
Thus, suggest abandoning the irradiation of pre-auricular portal plus whole neck tangential portal.
在推导钢管混凝土轴心受压长柱临界承载力公式时，论文利用材料的切线模量，分别推导了钢材和混凝土的切线模量公式。
As for the limit bearing capacity formula of the concrete filled steel tube long column subjected to axial compress, we lead to the tangent modulus and the conception of metal material.
小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。
The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.
请注意细微的差别，尤其是切线标示出的倒圆角与临近面的连接处，还有在那里反射光是如何被打断的。
Please pay attention to the subtle differences, particularly the Tangential line marking the fillet's point of contact with its adjacent surface, and how the reflections break there as well.
借助于邓肯-张非线性弹性模型对切线模量的处理方法，对M-C模型中的弹性模量进行了修正。
The elasticity modulus in Mohr-Coulomb model was modified by employing the processing method of tangential modulus in Duncan-Chang nonlinear model.
借助于邓肯-张非线性弹性模型对切线模量的处理方法，对M-C模型中的弹性模量进行了修正。
The elasticity modulus in Mohr-Coulomb model was modified by employing the processing method of tangential modulus in Duncan-Chang nonlinear model.
应用推荐