该无线电系统还可扩展频率范围，提供低频段甚高频。
The radio also has an extended range that provides access to low-band VHF.
如果您的系统的低频量有显着的扩展是必需的，另外一个队- X系列小组将提供很好的平衡，高输出功率的提高和整个系统。
Where significant extension of low frequency output of your system is required, the addition of a VS-X Series SUB will provide well balanced, high output enhancement and power to the overall system.
引入一种新的扩展小扰动稳定域的概念，以弥补原有小扰动稳定域无法考虑电力系统(超)低频振荡的不足。
A new type of extended small signal stability region (E-SSSR) is presented so that it can consider the low frequency oscillation phenomena captured in power system operations.
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