1) Second scalar analysis method
二阶标量近似法
2) second order approximation
二阶近似
1.
Through constructing a general equilibrium pricing model,we look for the stochastic discount factor and price the European option by second order approximation.
在此基础上,采用二阶近似方法对欧式期权进行定价。
3) scalar approximation
标量近似
1.
Based on scalar approximation,the dispersion property of photonic crystal fibers is investigated by an effective index approach in this paper.
利用已有文献对光子晶体光纤色散特性的计算结果,分析了色散随光子晶体光纤结构参数变化的趋势,并利用有效折射率方法基于标量近似理论对光子晶体光纤色散特性进行了有目的性的数值模拟,发现通过独立调整纤芯大小,可以在光通信波段实现非常接近零色散的色散平坦光子晶体光纤,其色散系数D的绝对值在1。
2.
By using the concepts of scalar approximation and leaky-mode and the couple-mode theory, the influence of the change of ambient refractive index upon the LPG′s characteristics such as resonance wavelength and peak loss in detail is analyzed.
将长周期光纤光栅简化为三层阶跃折射率波导结构 ,采用弱导标量近似和泄漏模式的概念结合耦合模理论较全面地、定量地分析了环境折射率变化对长周期光纤光栅谐振峰位置和深度等特性的影响 ,获得了一些有益的结论 ,与实验符合得很
3.
Based on a scalar approximation, the waveguide mode and dispersion property of photonic crystal fibres (PCFs) are investigated with an effective index approach in this paper.
利用有效折射率方法基于标量近似理论对光子晶体光纤的传播模式和色散特性进行了数值模拟 ,发现通过调节光纤包层的空气填充率或包层空气穴节距及其有效芯径可以在很宽的波长范围实现单模传播 ,可以设计零色散波长小于 1。
4) second-order approximate solution
二阶近似解
1.
The second-order approximate solution of P-doped cascaded Raman fiber lasers were obtained by nonlinear method.
利用非线性方法可以得到级联掺磷拉曼光纤激光器的二阶近似解。
5) second-order pade approximation
二阶pade近似
6) approximate arithmetic of two rank datas
二阶数据近似算法
1.
By analyzing the function of approximate arithmetic of two rank datas in optimizing and improving DDA arc interpolation,the author not only deduces DDA arc interpolation and its mathematical expression of improvement arithmetic but also proves that approximate arthmetic of two rank datas has a simple and rapid function in improving DDA arc interpolation.
通过二阶数据近似算法对DDA圆弧插补优化改进分析,推导DDA圆弧插补及其改进算法的数学表示,证明了二阶数据近似算法对DDA圆弧插补的改进具有简单性和高速性。
补充资料：磁势的近似计算法
磁势的近似计算法
approximate calculation method of magnetic potential
e lsh一deJ一ns一Jlsuonfo磁势的近似计算法(approximate Caleulationmethod of magnetie potential)利用简化公式求解磁路磁势近似值的方法。磁路的总磁势可用下式表示: IN=(IN)。+(IN)。+(IN)。(1)式中(IN)。为消耗在工作隙的磁势;(IN)。为消耗在磁导体中的磁势;(IN)。为消耗在非工作隙的磁势。通常(IN)。和( IN)。之和与总磁势IN的关系为 (IN)。+(IN)n=a(IN)(2) ，N一鲁(3)工作隙的磁势等于其磁位降 (IN)。二=Bol。(4)式中刀。为工作隙的磁感应强度;Z。为工作隙的长度。将式(4)代入式(3)，则 ，、一概(5)式中a为系数，a一。.15一0.3。当磁路中的非工作隙大，磁导体的磁感应强度很高时，由于磁阻增大，a将增加。利用此法计算磁路时，需有较丰富的设计经验。 (孙仲元)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条