toroidal rheostat环形: annular; ringlike; ring form ...可变电阻: variable resistance; thyreco ...环形变阻器，环形可变电阻: toroidal rheostat半圆形可变电容器: disk capacitor半可变电阻: vr-semi下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:环形可变电阻，即可在微信中查询翻译
