【正】 一、前言 双调谐中频放大器负载是有两个相互耦合的LC谐振回路,调谐在中频频率f。上。双调谐回路由于带宽较宽,而且带宽内......

The principal resonance of a visco-elastic systems under both deterministic and random parametric excitation was investi......

Dynamic investigations revealed that lower order harmonic resonance phenomenon exists in the three-frequency of the tran......

对于小电流接地故障,暂态等值电路是故障暂态分析的主要工具,可定量计算暂态电气量,为接地故障保护、过电压防护、接地补偿及配电......