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- Study on the in vitro propagation method of Anthurium spp. 火鹤花离体培养育苗技术研究。
- Many plants have special propagation methods. 许多植物的传种方式很特别。
- The model used multiple stepwise regression method and back propagation method independently. 模型分别采用多元逐步回归方法和反向传播方法。
- The surface wave propagation method was suitable for the measurement of dynamic shear moduli of particleboard. 不同方法测得的弹性模量值不同.但它们之间存在着一定的内在联系。
- The basic idea of the finite element beam propagation method (FE-BPM) is described. 文中概述了有限元束传播方法的基本思想和方法。
- Analysis of Optical Effect in Intersectional Silicon Waveguide Switch by Beam Propagation Method[J]. 引用该论文 刘育梁;段军华;刘恩科;罗晋生;王启明.
- Test on the Propagation Methods of Hibiscus mutabilis L. 芙蓉花优良品种的繁殖技术研究。
- A novel fast 2D time domain finite element beam propagation method (FE-TD-BPM) which is used to analyze planar lightwave circuit(PLC) is presented. 摘要提出并建立了一种新型的快速分析平面光波光路器件传输特性的2D时域有限元束传播法(FE-TD-BPM)模型。
- The propagation characteristics of several kinds of laterally tapered transitional waveguides are analyzed using the beam propagation method(BPM). 基于光束传播法,对几种只沿纵向变化的锥形过渡波导的传输特性进行了分析。
- The simulation using the bi-directional beam propagation method proves that the demultiplexer can have very low insertion loss and high isolation ratio. 藉由双向光束传播法来模拟此元件,结果显示此解多工器具有很低的插入损耗和高的隔离度。
- A full-vectorial finite element beam propagation method based on curvilinear hybrid edge/nodal elements is adopted in this thesis for studying optical waveguide problems. 本论文以采用曲线式混合基底元素之全向量有限元素波束传播法来分析光波导问题。
- Beam propagation method (BPM) is employed to calculate the coupling coefficient of transmission modes in MMF coupler, and an output pattern from coupling branch is obtained. 按照实验参数用光纤追迹法计算出光强分布和实验得到光强分布进行比较,所得结果一致。
- On the basis of predefined waveguide parameters, we use the finite difference beam propagation method to analyze the effect of the parameters on the device. 最后根据所确定的器件结构参数,用有限差分光束传输法分析了器件结构参数对器件性能的影响。
- A wide angle beam propagation method in an oblique coordinate system (OCS WA BPM) based on coordinate transformation is used to simulate optical waveguides. 用坐标变换的倾斜坐标系中的广角光束传播法对光波导进行了分析。
- The alternate-direction implicit finite difference beam propagation method (FD-BPM) is used to analyze the two-dimensional (2D) symmetrical multimode interference (MMI) couplers. 交替方向隐式有限差分波束传输法被用来分析二维限制对称多模波导干涉耦合器。
- The method seems good but it needs to be tried out. 这个方法似乎不错,但需要试验一下。
- For the data of image sonar from experiment on the sea, dada was modeled by grids, disposed by mathematics morphology. The path was planed in small region by Dt propagation method. 针对海上试验实际情况,以前视声纳为避碰传感器,以栅格法建模,以数学形态学的方法处理收到数据,以Dt值传递法进行了小范围内的两个机器人避碰规划。
- The stress distribution and effective refractive index of waveguide fabricated by this approach are calculated using finite element and finite difference beam propagation method, respectively. 采用有限元法和有限差分束传播法分别计算了存在这一矽层时的波导应力分布和有效折射率。
- The various states of the switches were simulated and analyzed using the finite difference beam propagation method (FD-BPM),the structure parameters of the switch were also designed and optimized. 用FD-BPM方法对其各个状态进行了模拟和分析,并对器件的结构参数进行了优化设计。
- A three-dimensional beam propagation method based on the Galerkin method (3D-GM-BPM) is proposed for directly modeling a parallel directional coupler based on optical rib waveguides. 摘要提出了基于伽辽金法的三维光束传播法(3D-GM-BPM),可直接应用于三维波导光电子器件的光波传输模拟,并用它模拟分析了基于脊形光波导的平行定向耦合器的光波传输特性。