您要查找的是不是：
- derrick boom rest 吊杆托架
- Additional bending moment on derrick boom 吊杆附加弯矩
- Welding Deformation Control for Derrick Boom 吊臂焊接变形的控制
- side arm, cantilever, derrick boom, derrick, jib 悬臂。侧臂。起重机。起重机铁臂。
- The ginpole is the simplest form of derrick. 起重吊杆是一种最简单的起重机。
- To raise or lower(the boom of a crane or derrick. 升降使起重机的吊臂上升或下降
- To raise or lower(the boom of a crane or derrick). 升降使起重机的吊臂上升或下降
- Stand clear of the swinging boom of the crane. 不要走近转动的超重机吊杆。
- The soldier rigged up a shanty for a night's rest. 士兵们临时胡乱搭起了一间小屋过夜。
- The slide cut off the valley from the rest of the world. 山崩切断了这个山谷与外界的联系。
- The current boom rests on high commodity prices; but commodity booms normally last only a few years before increased production, spurred by high prices, brings prices down again. 当前的繁荣只是基于日用品高价，但由于高价刺激,产品会增加,日用品繁荣通常只能持续几年,价格会再次下降。
- He had to lie down for a while to rest his legs. 他得躺下一会儿让腿休息一下。
- I'm a little bit tired. Let's take a short rest. 我有点累了。让我们休息一会儿。
- We can't go any farther without a rest. 不休息我们就走不动了。
- He made his pile during the property boom. 在房地产生意兴隆期间他发了大财。
- I need to sit down and rest my weary limbs. 我要坐下歇歇腿。
- The clock began to boom out twelve. 时钟开始敲十二点。
- Soon I dropped behind the rest of the class. 不久我就落在班上其他同志后面了。
- Do you type the letter or take a rest? 你打信呢，还是休息呢？
- John is English and the rest of us are Welsh. 我们当中，约翰是英格兰人，其余的都是威尔斯人。
