常见例句micro-perforated plate mufflellr 微孔板消聲器engine mufflellr 引擎消音器concentric cylinder mufflellr 集筒式消聲器speed control mufflellr 出口節流閥complex mufflellr 複郃式消聲器blow-off mufflellr 吹除閥消音器 返回 mufflellr