您要查找的是不是:
- 开open
- 直流空开air pressure corkscrew
- 空empty
- 水泵空开着Pump can run dry without damage
- 极小非空开集minimum nonempty open set
- 开关power switch
- 清空empty
- 空回backlash
- 花开bloom
- 开票make out an invoice
- 空的vacant
- 开车to drive a car
- 开店set up shop
- 开花abloom
- 盘空circle or whirl in the air
- 开门open (the) door
- 空出vacate
- 空载idle load
- 隔开to separate
- 占空比dutyfactor