speed-up

n (infml 口) increase in speed; acceleration 加速; 加快: a speed-up in the rate of production 生产速度的提高.

speculation, speculation about, speculative, speculator, sped, speech, speech therapist, speech therapy, speech-day, speechify, speechless, speechlessly, speechlessness, speed, speed limit, speed merchant, speed trap, speed up, speed-boat, speed-indicator, speedboat, speedily, speediness, speeding, speedometer, speedway, speedwell, speedy, speleological (also spelaeological), speleologist (also spelaeologist), speleology (also spelaeology), spell, spellbinder, spellbinding, spellbound, speller, spelling, spelt, spelunker, spend,