杨元喜还对“GNSS互操作性的定量评估”表示赞同，并指出，对于多系统接收机而言，普遍的最大/最小接收功率电平可以改善信噪比环境。

Yang argued for a “quantitative evaluation of GNSS interoperability, ” noting that common maximum/minimum received power levels can improve the signal-to-noise environment for multisystem receivers.

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对已有的多电平技术在电力系统中的应用进行了归纳和分析，最后预测了其发展趋势。

The application of the existing multilevel converters to power system is summarized and analyzed, and finally the future development trend is given too.

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本文最后搭建了一个基于多电平矢量发生的逆变实验系统，制作了一台用矢量发生器驱动的1.5 KW的多电平变换器实验样机，在样机上得到了较为理想的波形。

An experiment prototype of 1.5kw three-level inverter has been manufactured, which is driven by "based on FPGA vector generator". We finally got ideal wave in this experiment system.

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