In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
本文首先根据多散射中心理论与局部谐振原理，建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
A new design of soil moisture sensor using frequency domain reflectometry technology is introduced by derivation of equation of high frequency response of transmission line.
通过详细介绍传输线的高频率响应原理及其推导方程，以此为基础设计了基于频域反射的土壤水分探测传感器。
On this basis, a frequency response equation of the TLT was deduced from a two-port network model of the transmission line.
在此基础上，由传输线两端口网络模型推导得到了TLT的频率响应计算公式，并计算了TLT 的频率响应曲线。
The exact synthesis equation of motion in frequency domain and frequency-response functions for structural vibration were obtained according to the Ritz procedure.
然后根据里兹法，得到结构精确综合的频域运动方程与频响函数；
The exact synthesis equation of motion in frequency domain and frequency-response functions for structural vibration were obtained according to the Ritz procedure.
然后根据里兹法，得到结构精确综合的频域运动方程与频响函数；
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