短語詞組短語submerged wellhead platform system 沉沒式井口平臺(tái)系統(tǒng)submerged d platform 水下工捉臺(tái)semi -submerged platform craft 半潛式平臺(tái)艇submerged cleaning and maintenance platform 水下清洗和維護(hù)平臺(tái) 返回 submerged platform