Null depth of difference beam 波差瓣零值深度 ; [电讯] 差波束零深
Separated angle of difference beam 差波瓣分离角 ; [电讯] 差波束分离角
finite-difference beam propagation method 传播法
Finite-difference beam-propagation method 有限差分光束传输法
Finite Difference Beam Propagation Method 用有限差分光束传播法 ; 有限差分光束传输法
finite-difference beam propogation method 有限差分波束传播法
finite-difference time-domain beam propagation method 时域有限差分束传播法
Finally discussion is on how to optimize sidelobe level of the two sections of difference beam.
最后讨论了对于差波束两个切面旁瓣电平的优化的问题。
The finite difference beam propagation method(FD-BPM) can simulate the performance of the waveguide accurately.
有限差分束传播法则能够准确地模拟波导的性能。
The finite difference beam propagation method(FD-BPM)is used to design a device of 66% MMI-converter-Combiners.
采用有限差分波束传输法（FD-BPM）设计了一种66%模式转换、合并器。
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