栏目: 英语词典 来源: www.jsqq.net 时间: 2022-07-12 00:00
加重杆
weighting down───使负重；给……加负担
lightning rod───避雷针
lightning rods───避雷针
fighting top───战斗桅楼
fighting word───容易引起对抗的话
fishing rod───n.（有绕线轮的）钓鱼竿
lighting on───偶然遇见（碰见，发现）；停落于
weighing down───体重下降
weighing in───加入比赛；比赛前量体重；参加辩论
Method Large diameter oil tube and weighting rod are adopted to decrease lifting resistance of crude oil and to increase lowering-in energy of the string.───方法采用增大油管直径和下加重杆技术，来减少油流上升阻力和增大杆柱下行动力。
