查询词典 on the water

Based on the principle of mass-changing mechanics,this paper analyzes the process of water wheel raising water,educes its movement differential equation s in its three stages from starting to stable running,obtains solutions of the equations,and calculates on the angular velocity of the waterwheel in constant motion.

应用变质量力学原理对农用水车在提水过程中所经历的三个不同阶段，即在运动过程中水车的受力和运动量都在发生变化的情况下，对其动力学问题进行了较为深入的分析，导出了水车由起动至稳定运转三个阶级的运动微分方程，并得到了它们的解答，进而求得水车在趋于定常运动时的转动角速度。

The sludge in SBMBR1 presented granular characteristics and settled very well. The sludge in SBMBR1was brown and the sludge flocs was smashed by the shear force due to high intensity of aeration. The sludge size decreased and the sludge flocs blended with water forming ropy solutions, and there was no distinguish interface between water and sludge. Low sludge age and high loading operation enabled the sludge in SBMBR1 keeping higher sludge activity and the MLVSS/MLSS ratio and SOUR values of SBMBR1 were higher than SBMBR2. Both in SBMBR1 and SBMBR2, there were large amount of zoogloea, bacillus, coryneform of bacteria, and pediococcus. However, in SBMBR1 there were also a lot of Protozoa like epistylis and etc. A certain amount of filamentous bacteria can also be found in SBMBR1. The biological species in SBMBR1 were much more abundant than that in SBMBR2.3. Membrane fouling on flat-sheets membrane was observed and analyzed with AFM, SEM and TEM. After the measurement of membrane surface EPS and membrane surface ETX analysis, the pollutants composition on the surface of flat-sheets membrane was calculated.

从外观观察SBMBR1反应器中的活性污泥呈浅黄色，随着运行时间的增加，污泥粒径逐步增加，SV、SVI值逐步下降，呈现出较强的颗粒特征，沉降性能良好；SBMBR2污泥呈土黄色，污泥絮体被高强度的曝气所产生的切应力所打碎，污泥粒径迅速降低，絮体较为细碎，和水相混合成均一粘稠的溶液，看不到泥水分界面；低泥龄、高负荷运行，使得SBMBR1可以保持较高的微生物活性，MLVSS/MLSS值、SOUR值均高于SBMBR2；两级反应器活性污泥中均有大量的菌胶团，长杆菌、短杆菌和球菌是构成主体，但SBMBR1活性污泥中含有大量固着型原生动物如累枝虫等，还存在着一定数量的丝状菌，生物相要比SBMBR2丰富。3、借助原子力显微镜、扫描电镜、透射电镜等手段对平板膜污染现象进行观测和分析，并通过膜表面污染物EPS测定、污染膜表面能谱分析，得出平板膜表面污染物的组成。

Brought forward and reasoned the forming mechanism of Maowusu sandy land. Based on the analysis of the development of Holocene rivers and related loess and windsandy geomorphology, the paper put forward the forming mechanism of Maowusu sandy land as follows: while the climate became dry, the exterior channels extended backwardly and cut through the remained lake system of ancient Hetao lake. This resulted in the rapid discharge of underground water. The vegetation living on this water resource was destroyed completely. Then the sand began to form.

对毛乌素沙地的形成机制进行了新的探索基于对过渡地带全新世河流及其相关的黄土和风沙地貌发育、土地利用变化等分析，提出毛乌素沙地的形成机制：在气候变干的同时，外流河谷溯源延伸，切穿了长城以北河套古湖残遗湖系，使地表地下水迅速外泄，原靠湖系水资源维系的生长在河套古湖湖滨沙堤形成的沙地上的非地带植被的生存条件被彻底摧毁，而起沙。

Based on the pre-research of Reservior-Induced Seimicity, the text analyzed water's load effect, interstitial water pressure and chemicophysical effect on rock in Reservior-Induced Seimicity and discussed hydrogeological mechanism of Reservior-Induced Seimicity. The analysis supplys reliance for the hydrogeological analysis of Reservior-Induced Seimicity.

本文在总结水库诱发地震前人研究成果的基础上，系统分析了库水在水库诱发地震中的荷载效应，空隙水压力效应和对岩体的物理化学作用，从理论上讨论了水库诱发地震的水文地质机理，为水库诱发地震的水文地质分析提供依据。

Based on the current state of the evaluation of sustainable utilization of water resources,this paper summarize and expect contrastively the representative evaluating methods used in common,offer reference on choosing the evaluating methods of sustainable utilization of water resources.

本文在回顾水资源可持续利用评价研究现状的基础上，对目前提出的常用的代表性的评价方法进行了对比性综述和展望，为水资源可持续利用评价方法的选用提供了参考。

Based on this situation,polyethylene cystose constructed floating bed s were used to cultivate the Scindapsus aureus,Canna generalis and Monstera,under the comprehensive function of the bio-membrane formed on the surface of bio-medium,to improve water quality of scenic water bodies.

利用富营养化水体营养盐资源，以聚乙烯发泡板为人工浮床栽培绿萝、美人蕉和龟背竹，在生物填料表面生物膜的综合作用下，研究其净化景观水体的效果。

In course of boiler operation, there is magnetic film formed on the wall of boiler, the electron move between the wall of furnace and water, causing debris such as calcium and magnesium ions is not easily pasted on the wall, as a result, it is not easy to scale, we do not need to demineralize water.

不易结垢，无需软化，锅炉运行过程中在管壁上形成磁膜，电子在炉壁和水之间运动，致使钙镁离子等杂物不易在炉壁贴后，从而不易结垢，无需进行软化水处理。

By flotation experiment of coal slurry water, the influence of concentration of coal slurry water on floatation results in practice was illuminated, and the important significance of the study on the frother specialized in the recovery of coarse granule powdered coal was proposed.

通过浮选柱煤泥浮选试验说明了煤泥水浓度在实际生产中的影响结果，提出研究生产专门针对用于浮选柱浮选的起泡剂对浮选柱回收粗颗粒粉煤的重要意义。

Result Galium aparina water extract had some effects on the germination rate, roots length, stem length and fresh weight. The water extract decreased the germination rate and roots length of the 3 vegetables, but its effects on the stem length and fresh weigh was variable in different species.

结果］猪殃殃水提液对3种蔬菜的发芽率、根长、茎长、鲜重都有一定的影响；对发芽率、根长均表现为抑制作用，对茎长和鲜重的化感作用则因物种不同而不同。

And the heat went on and on, and sucked up all the moisture, till at last the main channel of the Waingunga was the only stream that carried a trickle of water between its dead banks; and when Hathi, the wild elephant, who lives for a hundred years and more, saw a long, lean blue ridge of rock show dry in the very centre of the stream, he knew that he was looking at the Peace Rock, and then and there he lifted up his trunk and proclaimed the Water Truce, as his father before him had proclaimed it fifty years ago.

炎热窜来窜去，湿气被吸干了，到最后只有瓦贡加的主渠里有一条窄窄的水流在死了的岸里流着。当活了一百年甚至更久的野象海塞看到一块长且光的干燥的岩脊显现在小溪最中央时，他知道他看到的是和平石。此时此地他象他父亲在五十年之前做的一样扬起那长鼻子宣布了和平时刻的来临。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。