acoustically opaque layer不: a block of wood透: penetrate; pass through声: sound; voice层: I storey; tier; stratum透声层: acoustically transparent layer; sound transparent layer; soundtra arentlayer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:不透声层,即可在微信中查询翻译