| 1. | Coefficient of phase displacement
相移系数 |
| 2. | The upwind finite difference method for compressible two - phase displacement problem
可压缩两相驱动问题的迎风差分格式及其理论分析 |
| 3. | The mixed least - square and characteristic finite elementmethods for two - phase displacement in porous media
半正定两相驱动问题的多步有限体积方法及其理论分析 |
| 4. | Characteristic method for two phase displacement in porous media and its convergence analysis basing on the postprogressing of finite element method for pressure
方法后处理的特征有限元方法及其收敛性分析 |
| 5. | Secondly , three migration methods including kirchhoff integral , 15 ? finite difference and wave equation phase displacement are discussed with the steps of performing on computer
( 2 )论文完成了对克希霍夫偏移、有限差分偏移和相位移偏移的理论和方法实现的研究。 |
| 6. | To reduce the inductor and the phase displacement between the input current and the input voltage simultaneously , multi - level ( ml ) converters are adopted as the pfc topologies in this thesis
为了同时减小电感和输入电流与输入电压间的相位差,本文提出采用多电平变换器作为pfc变换器的拓扑。 |
| 7. | By phase displacement forward method , we synthesized some two - dimensional geoelectrical sections , for example 2 - d dipping interface model , 2 - d dual geoelectic interface model and concrete pipeline model in homogeneous soil media
并利用相位移正演方法建立了四种地电模型，用以认识雷达剖面的特征、指导gpr剖面的地质解释和验证偏移方法的有效性。 |
| 8. | This thesis analyzes the zero - crossing distortion , and points out that the major causes are the inductor and the phase displacement between the input current and the input voltage . several methods are proposed and verified by simulation
本文对产生输入电流过零畸变的各种原因进行了定量分析,指出电感和输入电流与输入电压间的相位差是影响高频输入下输入电流过零畸变严重的根本原因。 |
| 9. | In this chapter , the method of bldcm rotor position detection is first discussed . then the principle and algorithm of bemf zero crossing point detection is explained . in succession , the chapter dissertates the software realization of the bemf zero crossing point detection algorithm , the software disturbance filter and the modification of phase displacement , and the software realization of commutation point
在这一章中，先简述了无刷直流电机的转子位置器检测方法；然后论述了反电动势过零检测原理和算法以及该算法的软件实现、软件滤波和相移修正、换相点的软件实现；最后对软件开环换相起动策略作了详细论述。 |
