English translation for "drop shaft"
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- 跌水井
跌水竖井 溜井 倾卸轴 自重运输井筒
Related Translations:
dropping: n.1.滴下;落下,降下;【军事】空降,空投,伞降。2.点滴;〔pl.〕 滴下物;落下物。3.〔pl.〕 (鸟等的)粪;【纺织;印染】落棉,落毛。短语和例子animal droppings 畜粪。
- Example Sentences:
| 1. | High pressure rotary jet grouting applied to curtain construction of drop shaft sinking 高压旋喷注浆法在沉井帷幕施工中的应用 | | 2. | Experiment study on hydraulic condition at the intake of inverted siphon with drop shaft 竖井式倒虹吸管进水口水力条件的试验研究 | | 3. | Results show that the composition and microstructure at different locations of the samples from drop shaft experiment are different with that from ground experiment 发现二次分相现象只在冷却较慢的试样中出现,冷却较快的试样中不出现二次分相。 | | 4. | A kind of measurement was developed to measure the air concentration of water and the result showed the possibility of entrained air existing near the wall of drop shaft . that is to say , the wall of drop shaft may be protected by entrained air from cavitation damage to some extent 本文设计了一种适用于近壁区水流掺气浓度测量的方法,对空腔段水流掺气浓度进行初步测量,发现井壁附近水流存在掺气的可能,这对改善水流空化条件能起到积极作用。 | | 5. | Using a vortex - flow drop shaft to convey water from a high level to a diversion runnel under the condition of high water - head and large discharge is a new kind of technology in the scheme of reusing a diversion tunnel as a discharge tunnel 近年来,为解决高水头、大流量导流洞改建泄洪洞的技术难题,旋流式竖井泄洪洞逐渐成为研究热点之一。但迄今为止,该技术尚未得到推广应用,其主要原因在于人们对竖井螺旋水流运动特征缺乏足够的了解和深入的研究。 | | 6. | In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft , the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s . ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well . ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively 本文通过试验研究与理论分析对旋流式竖井泄洪洞应用于高水头、大泄流量情况时存在的一些水力学问题进行了研究和探讨,取得以下主要成果:一、结合小湾工程导流洞改建,对高水头( 252m ) 、大泄流量( 1400m ~ 3 s )条件下旋流式竖井中的水流运动特征进行了比较全面的测量,包括空腔形态、径向流速分布及井壁压强等;二、提出了竖井空腔段螺旋水流水力计算方法,其计算结果与实测值吻合良好;三、利用试验与计算结果,对旋流式竖井的消能机理进行了探讨,对竖井各部分的消能能力有了总体认识;四、对竖井下部消力井的合理井深进行了优化试验研究,发现消力井合理深度为0 . 9d左右;五、通过试验研究,归纳出竖井水流总掺气量估算方法,为导流洞排气方案的设计提供了参考依据;六、在高水头、大流量条件下,竖井空腔段下部流速很高,尽管水流螺旋运动引起的离心力可以确保井壁压强保持正压,但空化数依然较低,因此竖井的空化空蚀始终是工程界关注的重大问题。 | | 7. | In the present dissertation , some properties of sodium tellurite glasses , including density , chemical durability , stability against crystallization and fragility of glass forming liquid are studied . the melting , evaporation and solidification of sodium tellurite glasses in low gravity during drop shaft experiments are observed . except this , the phase - separation of lead borate glasses under different gravity condition is also studied 本文亚碲酸钠玻璃作为研究对象,系统探索了亚碲酸钠玻璃的熔化条件,化学稳定性,玻璃抗析晶能力以及玻璃形成液体的脆性等问题,着重研究了na _ 2o - teo _ 2玻璃在落塔实验中的熔化和气化以及pbo - b _ 2o _ 3玻璃在落塔实验中的分相,为解释玻璃在不同重力条件下的熔化和分相等现象提供了理论依据。 | | 8. | It is found that the chemical durability of na2o4teo2 glass is dominated by the humidity of the surrounding air during the processes of glass melting and the following cooling . the mystery that na2o4teo2 glass crystallizes after drop shaft experiment , which has puzzled glass researchers for many years , is solved . this work indicates a way for making na2o4teo2 glass with good chemical durability 此反应主要受玻璃在熔化和冷却过程中的环境湿度控制,存放过程中的空气湿度对它也有影响,这解决了困惑人们多年的落塔实验中na _ 2o ? 4teo _ 2玻璃析晶的问题和na _ 2o ? 4teo _ 2玻璃稳定性难以控制的问题,为制备空气中稳定的na _ 2o ? 4teo _ 2玻璃提供了明确的依据。 |
- Similar Words:
- "drop scene" English translation, "drop seizure" English translation, "drop service" English translation, "drop set" English translation, "drop shadow" English translation, "drop shaft arm" English translation, "drop shaped" English translation, "drop shift" English translation, "drop ship measure" English translation, "drop shipment" English translation
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