（11）次同步谐振（sub-synchronous resonance）（12）损耗评价（loss evaluation） （13）继电保护（relay protection）
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压力损失是评价消声器性能的重要指标之一，直接关系到发动机的功率损耗。
Pressure loss is one of important factors in evaluating muffler performance, which is related to power loss of engine directed.
重点从电力电子的角度分析了其电力系统的运行效率，对系统主电路的功率部件逐个进行损耗分析，对其能量消耗进行评价。
Focus on the operating efficiency of power system in power electronics, analysis the loss of power devices of the main circuit to evaluate their energy consumption.
评价吸波效能的主要参数是损耗因子、复介电常数、复磁导率。
The important parameters for the wave absorption effects are electromagnetic loss factor, complex dielectric constant, complex magnetic conductivity.
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