ring roller环形: annular; ringlike; ring form ...滚轴: roller锥形滚轴: conical roller环形滚焊机: circular seam-welding machine环形滚子链: endless roller chain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:环形滚轴,即可在微信中查询翻译