关于杨博士的经典LLC论文中存疑问题请教。

学习LLC拓扑，阅读杨博士的经典论文中，关于4.2图的表示存疑，原文如下：


对图的下文描述为：
At 300V input, the converter is working close to resonant frequency. As input voltage increases, the converter is working at higher frequency away from resonant frequency. As frequency increases, the impedance of the resonant tank is increased. The means more and more energy is circulating in the resonant tank instead of transferred to output.
300V输入时，转换器工作在谐振频率附近。随着输入电压的增加，转换器的工作频率将比谐振频率更高。随着工作频率的递增，谐振回路的阻抗也随之递增，这就意味着越来越多啊的能量在谐振回路中循环流通，而不是传输到负载端。


按照描述图4.2中的Vin=400V和Vin=300V的位置应该反了吧？
论文更加详细的内容见https://bbs.21dianyuan.com/81595.html#buttom

大家怎么看？