在水下

Structural matter drops to hit water with fixed rate phut from certain height, inchoate and main the structure that attacks water process in the light of phut is answered begin research, and press mutation of field of force and Xing Bo to wait to study however to entering the underwater after water less, and add with each passing day as large bridge and marine project much, the construction in these projects and the phenomenon that phut of large construction content also appeared to hit water in use process, like Guangdong 9 rivers big bridge is bumped to break down after collapsing, large area bridge floor falls into surface to wait, the meeting such as mutation of field of pressure of the underwater after this kind of phut hits water and Xing Bo is right all round structural products gives birth to certain influence, evaluate this kind of influence to have real project sense to construction and design.

结构物从一定高度落下以一定速度砰击水面，早期主要针对砰击入水过程的结构响应开展探究，而对入水后水下压力场突变和兴波等却探究较少，而随着大型桥梁和海洋工程日渐增多，在这些工程的施工和使用过程中也出现了大型结构物砰击入水的现象，如广东九江大桥被撞垮塌后大面积桥面落入水面等，这种砰击入水后水下压力场突变和兴波等会对四周结构物产生一定影响，评价这种影响对施工和设计具有现实的工程意义。

As a result, the wave-induced erosion on sea bed is confined within the limited area that lies between the stable coastline and subaqueous slope where erosion is decline.

此时，自废黄河口向南出现了大片水深超过-10 m的深水区，说明在此期间水下三角洲-5 m～-10 m间的水下斜坡的侧向侵蚀是十分强烈的。

From the aspect of velocity distribution,this paper made a full analysis of the flow condition of integrated oxidation ditch with submerged propeller and training wall based on the measured data.

根据实测数据从流速分布的角度对增设水下推动器和弯道导流墙的一体化氧化沟弯道流态进行了研究分析，在实测和分析的基础上，提出了水下推进器和曝气转盘的合理设置位置，阐明了弯道导流墙对弯道流态的作用并提出了导流墙的合理设置方式，为实际工程设计提供了理论依据和参考。

Then,according to the research and measurement,it brought forward the proper setting position of submerged propeller and aerate rotary disk ,and gave a detailed explanation of the effects of training wall on the flow condition of curve channel.

根据实测数据从流速分布的角度对增设水下推动器和弯道导流墙的一体化氧化沟弯道流态进行了研究分析，在实测和分析的基础上，提出了水下推进器和曝气转盘的合理设置位置，阐明了弯道导流墙对弯道流态的作用并提出了导流墙的合理设置方式，为实际工程设计提供了理论依据和参考。

With the test model of underwater vehicle based on undulatory propulsion of long flexible fin as background, the paper mainly studied how to construct the test system which can satisfy the static and dynamic hydrodynamic force and moment measurement requirements of diversified test models of underwater vehicle fixed at arbitrary attitude.

以基于仿生柔性长鳍波动推进的水下机器人试验模型为背景，主要研究如何构建满足多种水下机器人试验模型在各种姿态下流体动力／力矩的静态与动态测量要求的测试系统。

I n the end, embedded motion control system in vx Works and the active diagnosis and fault-tolerant control system are developed in this paper, with the results of simulation and the trial in a lake.

最后探讨了嵌入式运动控制系统，给出水下机器人运动控制系统在vxWorks下的实现，建立水下机器人动态故障诊断与容错控制系统，并给出仿真结果和湖试试验结果。

The water/metal fuel motor system configuration is based on a numerical simulation of combustion.

水反应金属燃料发动机[1]是一种全新概念的水下高能量密度推进系统，其工作原理为：雷外海水在速度头作用下进入燃烧室，与燃烧室中以一定形态存在的金属燃料发生强烈放热反应，产生的热量使未参与反应的海水受热蒸发，混合高压气体通过发动机喷管膨胀做功产生推力，从而推动水下航行

Are discussed. There is very important meaning to develop the underwater shipwake research depending on current well-found equipment on the condition that key techniques are resolved.

借助于目前成熟的设备，在攻克了关键技术的前提下，可以实现水下显微高速摄影，这对开展水下尾流的研究具有十分重要的意义。

Seedlings of Vallisneria natans were planted in waters with different turbidities of 30 NTU, 60 NTU and 90 NTU. Such turbidities were made by mud and sand particles below 100μm in diameter. Photosynthetic fluorescence characteristics were measured by a developed submersible pulse-amplitude modulated fluorometer, Diving-PAM.

用粒径小于100μm的泥沙分别配置浊度为30、60和90NTU的浑浊水体，将苦草幼苗种植于上述水体中，测定幼苗的叶片长和叶片数，并利用水下饱和脉冲荧光仪测定幼苗的光合荧光特性，研究在不同浊度水体中水下光强对苦草幼苗生长的影响。

The faulted scarp type slope break belt controlled the development of the near shore sub-aqueous fan system. The faulted terrace type steep slope break belt controlled the development of the fan-deltas and sub-aqueous fan system. The gentle slope type slope break belt controlled the development of the fan delta system. The inner basin type slope break belt controlled the off shore sub-lacustrine fan system in the basin-level falling stage.

断崖型陡坡坡折带控制着近岸水下扇沉积体系的形成和分布；断阶型陡坡坡折带控制着扇三角洲或近岸水下扇及前方的湖底扇体系的形成和分布；断阶型缓坡坡折带控制着扇三角洲沉积体系的形成和分布；在基准面下降阶段，盆内坡折控制着远岸湖底扇的形成和分布。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。