thermostat

n device for automatically regulating temperature by cutting off orrestoring a supply of heat (eg in a centrally-heated building,an oven, etc) 恒温器（如中央供暖的建筑物、 烤箱等中的）.

thereon, thereto, thereunder, thereupon, therewith, therm, therm(o)-, thermal, thermal capacity, thermionic, thermionic valve (US ,thermionic `tube), thermocouple, thermodynamics, thermoelectric, thermometer, thermometre, thermonuclear, thermoplastic, Thermos, thermosetting, thermostatic, thermostatically, thesaurus, these, thesis, Thespian, Thespian (also thespian), they, they'd, they'll, they're, they've, thick, thick-headed, thick-skinned, thicken, thickening, thicket, thickly, thickness,