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- They measured the length of drill collars yesterday. 他们昨天仗量了钻杆和钻链的长度。
- On the basis of an analysis of the location and causes of the failure of drill collar threaded connection, a high-strength drill collar threaded connection is developed. 在分析钻铤螺纹失效部位及原因的基础上，研制了高强度钻铤螺纹，它与普通钻铤螺纹相比，只是在外螺纹小端增加了一段光平的锥体。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- After harvest we will have a mass of rice. 秋收后，我们将获得大量稻谷。
- She had lots of drill in listening. 她在听力方面受过许多训练。
- I found a mass of spawn in the fish before cooking. 烧鱼前，我发现鱼里有很多鱼籽。
- We need a short drill collar to put here. 这里要接一根短钻铤。
- The mass of workers do not want this strike. 大多数工人不愿举行这次罢工。
- Research on a new stress relief groove of drill collar threaded connections 新型石油钻铤联接螺纹减应力区的研究
- They set to work accumulating a huge mass of data. 他们开始累积大量的资料。
- The mass of faces pressed closer. Walling him in. 许许多面孔越来越逼近，把他团团围住。
- A cloud is a mass of vapour in the sky. 云是天空中的水汽团。
- A dense mass of black hair framed his face. 浓密的黑发衬托着他的面庞。
- The garden was a mass of colour. 花园中五彩缤纷。
- Application of finite element method in the structure optimization of drill collar thread 有限元法在钻铤螺纹结构优化中的应用
- A large mass of people moving or acting as a body. 一大群作为一个整体运动或行动的一大群人
- Ultrasonic Testing of Drill Collar Threads by Small Angle Incidented Longitudinal Waves 钻铤丝扣的小角度超声纵波检测
- A mass of bubbles in or on a liquid; foam. 泡沫液体中的大量气泡; 泡沫
- A soft, moist, shapeless mass of matter. 浆状物一团柔软、潮湿且无固定形状的东西
- ULTRASONIC INSPECTION OF DRILL COLLARS 钻铤的超声波探伤
