rheostat
noun [ C ] physics specialized uk/ˈriː.ə.stæt/ us/ˈriː.oʊ.stæt/
变阻器
a device used to control and change the flow of electric current through a machine such as an electric light
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。