groove with variable pitch变: become different; change距: distance槽: trough; manger变距槽轮: adjustable sheave; extensive pulley短距槽舌兰: holcoglossum flavescens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:变距槽，即可在微信中查询翻译
