regulator

英 ['regjʊleɪtə] 美['rɛɡjuletɚ]

• n. 调整者；校准器

1. any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.

2. a official responsible for control and supervision of a particular activity or area of public interest

3. a control that maintains a steady speed in a machine (as by controlling the supply of fuel)