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- It is the key study how to make sure the pressure distribution of liquid in the pump barrel and to study the pump valve-ball's movement to improve the systematic efficiency. 对有杆抽油泵泵阀运动规律的研究和确定抽油泵泵阀筒内液体压力的分布是提高抽油机井系统效率研究的关键性课题。
- liquid instantaneous pressure in the pump barrel 泵筒内瞬时压力
- Boronizing of inside surface of subsurface pump barrel 抽油泵泵筒内表面渗硼组织与性能研究
- The mechanical analysis on axial bending of pump barrel 有杆泵泵筒的纵向弯曲机理分析
- Chock the barrel up or else it will roll over. 用楔子塞住圆桶,不然它会滚过去。
- The beer comes out of the barrel under pressure. 啤酒受到压力从桶中流出。
- Peter had his head in a tar barrel sure enough. 不出所料，彼得陷入了困境。
- Development and application of whet-slate used for machining pump barrel 抽油泵泵筒加工用珩磨砂条的研制与应用
- The worker repaired the barrel with a hoop iron. 这个工人用一个铁箍修桶。
- He made a barrel with staves by himself. 他自己用桶板做了一只桶。
- Study on the variation regularity of fluid pressure in a pump barrel 抽油杆泵筒内流体压力变化规律
- He drew off a pint of beer from the barrel. 他从酒桶里抽出一品脱啤酒。
- One rotten apple spoil the whole barrel. 一只烂苹果，糟蹋一整箩。
- The price of oil have reach$30 a barrel. 石油的价格已涨到每桶30美元。
- Tilt the barrel forward to empty it. 把桶向前倾，倒出里面的东西。
- How much does a barrel of oil cost? 一桶石油要多少钱?
- A tyre expands when you pump air into it. 轮胎一打气就鼓起来。
- He ran off a bucket of water from the barrel. 他从大木桶中放出一桶水。
- He emptied out the water barrel to clear it of sediment. 他把水桶倒空以清掉桶底的沉淀物。
- He draw off a pint of beer from the barrel. 他从酒桶里抽出一品脱啤酒。
