step-up
a. 把电压升高的, 递升的

英英解释:

名词 step-up:

  1. the act of increasing something
  2. 同义词:increase

动词 step-up:

  1. increase in extent or intensity
  2. 同义词:escalate, intensify, step up
  3. speed up
  4. 同义词:rev up, step up
  5. make oneself visible; take action
  6. 同义词:come to the fore, step forward, come forward, step up, step to the fore, come out