The equivalent permeability of fracture network in rock masses is estimated by using parallel principle of flow network.
根据渗流网络的并联原理，建立了岩体裂隙网络等效渗透率计算方法。
Using the basic principle of analog parallel harmonics measurement and a special multi-layer feedforward neural network, a corresponding harmonics measurement on-line is built.
通过构造一个特殊的多层前向神经网络，利用模拟并行测量装置的基本原理，设计了相应的谐波监测电路。
A new measuring instrument of rotational inertia has been devised by the fixed - axis rotation principle and parallel axis theorem of compound pendulum.
利用复摆定轴转动原理和刚体平行轴定理设计的一种新型转动惯量测定仪。
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