resonant transition meaning in English

共振跃迁

In this thesis , we mainly investigate the resonant soft switching pwm inverter . the main contents are as follows : 1 . through analysis of the dc - rail resonant soft swithing inverter and zvt ( zct ) - pwm technique , we advance the solution to resolve the question - how to apply pwm technique to control dc - rail resonant soft swithing inverter is resonant transition technique
主要内容为：对直流环节谐振型逆变器的现状进行分析研究，针对如何把谐振软开关技术和pwm技术结合起来这一关键问题，提出解决这一问题有效的办法是谐振过渡技术。