He then treated the evolute of a plane curve.
然后他讨论了平面曲线的渐屈线。
An open curve formed by a plane that cuts the base of a right circular cone.
一个平面与正圆锥体的底部相交而形成的不闭合的曲线。
A closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it.
由完全相交的一个圆锥体和一个平面的交集所形成的闭合的平面曲线。
The motions of plane and space curve have a wide range of applications.
平面和空间曲线的运动有着广泛的应用。
(geometry) a curve generated by the intersection of a plane and a circular cone.
(几何)一个平面和一个圆锥体相交而生成的曲线。
Comprehensive curve pattern, attenuation coefficient and the relationship of plane position and geological abnormity had been conducted.
研究了综合曲线的形态、衰减系数大小，平面位置与地质异常体的类型定性关系。
The definition of plane central curve with positive integer degree was proposed.
给出了平面正整数次中心曲线的定义和中心命题。
Taking plane curve machining for example, the motion schemes of machine tools with two freedoms are presented.
以平面曲线加工为例，给出了所有两自由度机床的运动方案。
The paper introduced a design method that the plane curve design of out distance long control with whirl line.
本文提出了由外距长控制设计的带回旋线的平曲线设计方法，包括公式的推导、用步骤和实例。
Objective To measure and evaluate the distribution feature of radiation dose at the conventional puncture plane in invasive diagnosis and treatment area, and depict the corresponding isodose curve.
目的测量和评价介入诊疗区域内常规穿刺平面辐射剂量的分布特点，绘制相应的等剂量曲线示意图。
The problem of attaining the tangent equation of a certain point on a quadratic curve is basically solved in plane analytical geometry.
平面解析几何对“求过二次曲线外的点所引曲线切线的方程”的问题，未给出一般的方法和公式。
The study of this dissertation analyses the focus system technology, which is the key technology of curve plane surface lithographic fabrication techniques.
本文重点讨论了曲面光刻的关键技术——自动调焦系统，并对曲面工艺及光刻线条进行实验分析。
The geometric curve of the irregular plane can be applied in the design of flower beds, the park or garden on the.
不规则的几何曲线平面可以应用在花坛、街心公园或庭院的设计上。
In the paper the curve interpolating calculation AD error analysis for CNC grinding of plane CAM are discussed, and the tool - path generation is also analyzed.
论述了数控磨削平面凸轮的误差分析和曲线插值计算，并讨论了砂轮的刀位轨迹的生成。
The symmetry algebras of 1 + 1 dimensional nonlinear evolution equation arising from the motion of plane curve in affine geometry are systematically studied.
系统地研究了来自于射影几何中平面曲线运动的1 + 1维非线性方程的对称代数。
This paper suggests a new method of rapid and automatic measuring the spectral diffraction efficiency curve of plane grating.
本文提出了一种快速自动测试平面光栅光谱衍射效率曲线的新方法。
A new effective method which makes use of quaternion theory is presented to implement location transformation of a plane curve.
利用实四元数理论，提出了一种将一般位置平面曲线变换到空间任意指定位置的一种简捷方法。
From commonly used equation of calculating plane figure quadrature, formulas of calculating plane figure quadrature by applying curve parametric equation can be deduced.
从由曲线普通方程求平面图形面积的公式出发推出在各种情形下由曲线参数方程求平面图形面积的公式。
The paper describes the design of plane layout of ladder sleepers on curve sections with super-elevation and the method of installing super-elevation on curve sections.
阐述梯形轨枕在设有超高的曲线地段平面布置的计算方法，以及曲线地段超高的实现方法。
In this article, the authors study the trimming of a random smooth curve in a plane polygon and present an arithmetic for it, with the conclusion drawn from the concept of traversing point.
研究了平面任意封闭区域对平面任意光滑曲线的裁剪，提出光滑曲线对封闭区域的穿越点概念，并以穿越点为依据，给出了平面任意封闭区域对光滑曲线的裁剪算法。
The expression of optic axial Angle and ray axial Angle on light wave plane can be obtained by using the curve equations of the wavefront of light wave and normal plane of light wave.
利用光波面和光波法线面的曲线方程，得出了光波面上光轴角和光线轴角的表达式。
Methods:Dynamic CT scan was performed in 9 volunteers, measuring the CT value of the same plane of aortic arch and the theoretical threshold was obtained by the time density curve(TDC).
方法：9例志愿者行主动脉弓同层动态增强扫描，利用获得的主动脉弓时间-密度曲线（TDC），寻求触发技术的理论阈值。
A plane curve formed by the locus of points equidistant from a fixed line and a fixed point not on the line.
最大食分曲线为所有点的轨迹，在那些地方，在给定的时间里达到最大食分。
It is known that the projection of the intersection of quadrics with common plane of symmetry on this plane is a curve of second order.
具有公共对称平面的二次曲面的交线在该平面上的投影为二次曲线。
The structure can convert the rotation of a drive belt pulley into the plane curve movement of the pivot bolt, realize motor driving of the stapler and ensure the stapling strength and quality.
采用这样的结构后，可以实现将主动带轮的转动转变为枢轴螺栓的平面曲线运动，实现订扣机的电机驱动，保证订扣力度和订扣质量。
This paper expounds the design thinking and application method of the plane twice covered curve worm drive combined the engineering example, and gains the astisfied result.
结合工程应用实例阐述了平面二次包络弧面蜗杆传动的设计思路与应用方法，得到较为理想的结果。
The quality of plane designing for curve bridge directly affects the structure design, the degree of construction difficulty; engineering cost and outward appearance.
曲桥平面设计的好坏直接影响着桥梁的结构设计、施工难度、工程造价及外观。
For NC machining of plane section method, the machining path of tool cutting plane and implicit surface can be found, and the curve of the tool path is drawn by the positive-negative method.
把隐函数的优势应用到数控加工编程中，即对于截面法的数控加工，求出刀具切削平面与隐函数曲面的加工轨迹，再用正负法绘制刀具轨迹曲线。
When the point moves along the plane curve , the trace curve of the point is called the evolute of the curve , denoted by, and is called the involute of the curve .
当点沿曲线移动时，相应的曲率中心的轨迹曲线称为曲线的渐屈线，而曲线称为曲线的渐伸线。
At the same time, homotopy algorithm is applied in the solution of non-linear equation of plane link curve, it enlarges the convergence range of optimization process steadily.
同时，在求解连杆曲线非线性方程组中引入同伦算法，使算法具有大范围收敛性，从而保证了优化过程的稳定收敛。
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