短語(yǔ)詞組短語(yǔ)hollow w pipe 空心管子Hollow Copper Pipe 空心銅管hollow -pipe waveguide [電訊]空管波導(dǎo)hollow bored pipe 空心鉆孔灌注樁hollow arbor pipe 空心管子hollow concrete pipe pile 空心管樁hollow wall pipe 空心壁圓管prestressed hollow concrete pipe pile 預(yù)應(yīng)力空心管樁hollow pipe waveguide 空管波導(dǎo) 返回 hollow pipe