n. 调整者, 校准者, 校准器, 调整器, 标准钟

[化] 调节剂; 调节器

[医] 调节器

Regulator \Reg"u*la`tor\ (-l?`t?r), n.
1. One who, or that which, regulates.

2. (Mach.) A contrivance for regulating and controlling
motion, as:
(a) The lever or index in a watch, which controls the
effective length of the hairspring, and thus regulates
the vibrations of the balance.
(b) The governor of a steam engine.
(c) A valve for controlling the admission of steam to the
steam chest, in a locomotive.

3. A clock, or other timepiece, used as a standard of correct
time. See {Astronomical clock}
(a), under {Clock}.

4. A member of a volunteer committee which, in default of the
lawful authority, undertakes to preserve order and prevent
crimes; also, sometimes, one of a band organized for the
comission of violent crimes. [U.S.]

A few stood neutral, or declared in favor of the
Regulators. --Bancroft.