短語(yǔ)詞組短語(yǔ)underground duct -line 地下風(fēng)道duct line system 管路式duct line length 管道長(zhǎng)度cable duct line 電纜溝道bile duct carcinoma cell line 膽管癌細(xì)胞系artificial line duct [通信]仿真線通道line duct for noise reduction 降噪消聲管道In -line Duct Fan 方圓管道風(fēng)機(jī)line of duct 管線 返回 duct line