expansion chamber type absorberexpansion-chamber type absorber扩大: expansion; amplify; upstep; ...空洞: cavity; void型: mould; model消音器: antisqueak; bumper; deafener ...空洞消音器: gutted muffler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:扩大空洞型消音器，即可在微信中查询翻译
