ffd meaning in English
方形自由形状变形
失效检测
圆柱体自由形状变形
自由变形
自由变形修饰器
Examples
- Also , as it appears in the picture above , as soon as the lava exits the ffd box , it will pop back to its unmodified position
（另外，正如它像上图一样，一旦岩浆模型离开ffd变形盒的空间，它将返回未修改时的位置。 - In the thesis , the fundamental formula of ffd method derives from the square root that is approximated by a continued fraction expansion in the one - way wave equation . optimizations of the parameters of the finite - difference operator improve the validity of the method
本论文用连分式近似单程波波动方程中的平方根导出ffd算法的基本公式，并对ffd算法中的有限差分算子进行了系数优化，进一步提高了计算的有效性。 - Simulation results for a numerical example show preliminarily that this method for estimating spreading time of tsd channel with a proposed multi - hypothesis rci is simple , convenient , and feasible . then the experiment is carried through in tank for verifying the results including detection capability of src and rci and feasibility of proposed multi - hypothesis rci for estimating spreading time of tsd
接着进行水池实验验证了ffd和tsd信道的最佳似然比检测器分别为src和rci ，并针对实验环境对多重假设的rci算法作了改进，估计了tsd信道的扩展时间。 - Two approaches to improve the robustness of the detector , each based on a different theirs distortion mechanism . one is based on the modeling as fast fading distortion ( ffd ) whose optimum detector is the segmented replica correlator ( src ) . the second approach is replica correlation integration ( rci ) for time spreading channel ( tsd )
从频率扩展信道( fastfadingdistortion ， ffd )和时间扩展信道( timespreadingdistortion , tsd )的形成机理出发建立了目标回波的数学模型，指出ffd和tsd的最佳检测器分别为分段副本相关器( src )和副本相关积分器( rci ) 。 - At the same time , the optimum detector of ffd and tsd in wavelet domain have been investigated according to properties of cwt . they are wavelet - domain - segmented - replica - correlator ( wdsrc ) and wavelet - domain - replica - correlation - integration ( wdrci ) . and we have proved that their performances are consistent with those in time domain
同时又依据连续小波变换的性质推导出ffd和tsd信道小波变换域的最佳检测器：小波域的分段副本相关器( wdsrc )和小波域的副本相关积分器( wdrci ) ，并从理论和仿真证明了它们与相应的时域检测器性能的一致性，优于小波域的副本相关器( wdrc ) 。