regulating ringspeed ringspeedring调速: speed governing; speed regul ...环: ring; hoop高速环: high speed loop; high-speed loop; high-speedloop上速环: upper speed ring增速环: speed ring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:调速环,即可在微信中查询翻译