直接计算，我们需要先把曲线参数化。
Well, to do it directly you would have to parameterize this curve.
如果无法对曲线参数化，那么就很难计算线积分了。
If you cannot parameterize the curve then it is really, really hard to evaluate the line integral.
计算它的方式是找到Mdx和Ndy的表达式,然后把曲线参数化。
OK, so the way we compute it is we take this expression Mdx Ndy and we parameterize the curve.
最后，通过给定的参数计算了旋转库特流切向速度分布的数值解，并绘制了相应的切向速度分布曲线。
Finally, the numerical solutions of the azimuthal velocity were calculated and the corresponding distribution curves were draw out by assuming some parameters of the flow.
通过非线性优化算法，拟合实测的Q—S曲线，可得到桩土系统的工程力学参数，并由此计算得到桩身轴力及侧摩阻力分布曲线。
Measured Q-S curve are back figured by nonlinear optimization approach and model parameters are found simultaneously, then distribution of axial force and skin friction along pile are calculated.
在涵长基本公式的基础上，详细分析了公式中各参数在曲线路段中的计算方法。
On the basis of the basic formula for culvert length, the computing method of parameters in the formula on curve road segment is analyzed.
方法：采用EXCEL软件对溶出度实验进行数据处理、参数计算及溶出曲线的绘制。
Methods: the software EXCEL was applied to process the data, calculate the parameters and draw the curve of dissolution rate.
本文利用多种测井曲线及其计算的地质参数曲线提取反映沉积微相的特征参数。
The characteristic parameters of sedimentary microfacies are extracted by using well logs and geological parameter curves.
将这种方法用于自然电位(SP)曲线的计算，能够部分地消除围岩影响，提高地质参数的数据精度。
By applying this method to SP curve computing, the shoulder-bed effect could be, to some extent, removed so that the data accuracy of geologic parameter is enhanced as a matter of course.
通过对抽水孔、观测孔压降曲线的分析对比，计算出能够代表地层特性的参数。
Through analyses and comparisons of depression curves parameters which may represent the behaviours of stratum are obtained.
数值仿真结果表明，该方法只输入少量的航路点坐标数据和限制参数，就能计算出沿直线和曲线飞行的水平轨迹。
The digital simulation results show the ground track of the straight flight and the curve flight can be worked out with the key - in of only a few waypoints coordinates and constraint parameters.
用某线路车辆实际参数进行详细的牵引计算，绘制了牵引特性和制动特性曲线。
With a line vehicle's actual parameters this paper conducted a detail traction calculation, drawn up the traction characteristic and the brake characteristic curve.
在计算过程中对测井曲线进行环境校正与畸变参数修复和重构工作。
The environment correction of logging curves and the renovation and reconstruction of distorting functions are carried out during calculation.
开发了参数计算软件，进行优化计算，得到优化的几何参数及参数对几何尺寸的影响曲线。
One software is developed to calculate parameters. By the software, the optimum geometric parameters and influencing curves of parameters on geometric sizes are obtained.
此外，通过传统的质点方法和行驶动力学，以缓和曲线长度为例对线路设计参数进行了计算。
In addition, calculations through traditional method such as particle means and driving dynamics for line design parameters are also done.
通过输入弹、靶普通参数及碰撞的基本条件，计算程序即可给出各基本参量间的关系曲线。
Further, programs can draw some curves after receiving some essential factors of impacting and common parameters of rod and target.
在热田开发早期，较简单的评价方法是有用的如：热储计算法、衰减曲线分析法或集中参数模型等。
During the early stages of field development, simpler methods of assessment such as stored heat calculation decline curve analysis or lumped parameter models are useful.
利用所建立的数学模型，采用计算机模拟的方法，得到了主要参数间的静态关系曲线，并分析了系统动态特性。
A static relations curve of the main movement parameter is given by means of computer simulation and by an established mathematical model, and the system dynamic characteristic analyzed.
由于采用归一化参数，建议计算曲线适用于任何类型的参数优化控制器的永磁操动机构的操作。
As the normalized parameters are adopted, the proposed calculating curves are applicable to the parameter optimization for any kind of operation controller of permanent magnetic actuator.
并借助计算机绘出了主瓣宽度和副瓣电平与天线主要参数的关系曲线；
With the aid of a computer, curves of beamwidth and side lobe versus the antenna parameters are plotted.
这样，就可以计算出诊断喷射泵井工况所需要的压力比，流量比和泵效等工况参数，泵吸入口压力还可用来计算油井的产能曲线。
The inlet pressure of the jet pump can also be obtained by the pressure ratio, and it can be used for acquiring the productivity curve of an oil well.
借鉴拉塞尔的续流分析方法，将焖井恢复压力曲线线性化并计算出流变参数；
Using Lasels analysis method of afterflow for reference, pressure build up curve of shut in well is linearized and rheological parameter is calculated.
通过实例计算表明该方法是正确的，所得最优飞行轨迹参数没有波动现象，曲线光滑。
The example calculating shows that the method is correct. Optimum flight trajectory parameters don't have wave and are smooth.
本文将主要阐述卵形曲线的主要参数计算以及卵形曲线上任一点坐标的计算方法。
This article mainly elaborated the oval curve main parameter computation as well as the oval curve take office a coordinates computational method.
反馈部分为参数自调整模糊控制器，终点的计算采用二次曲线拟合法。
Feedback control is a parameter self tuning fuzzy controller and the burn through point is calculated by quadratic curve method.
通过理论计算和实际现场试验所得的参数，制定出龙羊峡水电站发电机组的进相运行曲线图。
According to the parameter getting through the theories calculation and the actual field experiments, the paper makes phase operation graph of generator in Longyangxia Hydropower Station.
通过对拐角处连接情况的分析，确定了连接PH曲线中的参数计算方法。
Parameters for constructing the PH curves are proposed according to the situation of the corner.
样条曲线曲面是在计算机图形学中应用最广泛的参数曲线曲面类型。
B-Spline curves and curve surfaces are the most commonly used parametric curves and surfaces in Computer Graphics.
相对于参数活动轮廓模型，几何活动轮廓模型具有很多的优点，如计算的简单性和在变形的过程中能够处理曲线的拓扑变化，等等。
Geometric active contour model has many advantages over parametric active contour model, such as computational simplicity and the ability to change curve topology during deformation, et al.
相对于参数活动轮廓模型，几何活动轮廓模型具有很多的优点，如计算的简单性和在变形的过程中能够处理曲线的拓扑变化，等等。
Geometric active contour model has many advantages over parametric active contour model, such as computational simplicity and the ability to change curve topology during deformation, et al.
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