jackscrew
英[\'dʒækskruː]
美[ \'dʒæk,skrʊ]
基本释义
- n.
- 螺旋起重机
真题例句
At Pullman's signal, each man turned his Jackscrew the same amount at the same time, thereby raising the building slowly and evenly.
2015年高考英语湖南卷 阅读理解 阅读B 原文英英释义
Noun
1. screw-operated jack