- 重点词汇
- 占空比
duty cycle; duty ratio; dutyfactor
- 什么
what; whatever; wot; something; anything; everything; nothing (in negative statements); eh; pardon
- 意思
meaning; sense; idea; significance; intention; implication; thought; interest; import; suggestion; desire; mean; wish; imply; signify; hint; suggest; intend; trace; fun