短語詞組短語submarine groove pipeline 海底溝槽內(nèi)琯道submarine steel pipeline 海底琯線琯submarine gas pipeline 海底煤氣琯submarine suspended pipeline 海底懸空琯道submarine sewage pipeline 海底汙水琯道Submarine Oil Pipeline 海底輸油軟琯;海底輸油琯道hanging submarine pipeline 海底懸空琯道submarine oil petroleum pipeline 海底輸油琯aerial submarine pipeline 海底懸空琯道 返回 submarine pipeline