您要查找的是不是：
- 谐振DC环resonant DC-link
- 环loop
- 谐振resonance
- 环比link relative ratio
- 圆环traffic circle
- 环的annular
- 谐振腔cavity resonator
- 环氧epoxy
- 谐振器resonator
- 环氧乙烷epoxy ethane
- 谐振频率harmonic frequency
- 环己hexanaphthene
- 谐振型DC／DC变流器resonant DC/DC converter
- 外环outer ring
- 简谐振动simple harmonic oscillation
- 环保护ring protection
- 手环wrist strap
- 环岛rotary island; roundabout
- 三种BUCK谐振型PWM DC/DC变换器的比较Comparison of Three Kinds of BUCK Resonant PWM DC/DC Converters
- 卡环snap ring
