Oil derrick is an important part of oil equipment.
石油井架是石油装备的重要组成部分。
参考来源 - 石油井架极限承载力研究·2,447,543篇论文数据,部分数据来源于NoteExpress
以上来源于: WordNet
N-COUNT A derrick is a machine that is used to move cargo on a ship by lifting it in the air. 起重机
N-COUNT A derrick is a tower built over an oil well which is used to raise and lower the drill. 油井塔
词组短语
应用推荐