在水下的

Accurate station keeping is demonstrated in experiments with our four-DOF underwater vehicle and the observed target which is a regular tetrahedron with four ball-like culminations in our indoor water tank.

悬停定位具有两个特点：首先，它是一种动力定位，即在定位传感器的引导下，依靠自身的动力，在控制系统的指挥下抵抗外界扰动而保持某一位姿；其二，它是一种局部定位，水下机器人相对作业目标的运动空间范围一般不会很大。

The underwater enclosure was built along the boundary of target water body and the lake bottom sludge was filled into the enclosure by twisting-suction dredging ship according to designing elevation for the purpose of formation of slope riffle, which will improve natural condition of littoral zone of lake, and create favorable habitation condition for ecological restoration in littoral zone of lake.

文章介绍最新开发的湖滨陡坎沿岸水域基底修复技术，主要采用人工方法在需要进行大型水生植物群落恢复的湖滨陡坎沿岸的水域实施基底修复工程措施，在目标水域边界构筑水下围埝，采用绞吸式挖泥船将疏浚的湖泥按设计高程要求吹填至基底修复工程区内，形成缓坡浅滩，改善湖泊沿岸带自然条件，为湖泊沿岸带生态修复创造良好的生境条件。

As an important technology of computer vision, image mosaic is widely used in the image analysis examination under the water self-motion map movement analysis etc.

图像匹配作为计算机视觉中的一门重要技术，它在遥感图像分析、水下检查、立体视觉、自动地图、运动分析等领域都有广泛的应用。

You can see her underwater, in the shallow pool of water and in the sand.

你可以看到她的水下，在浅水池的水和沙子。

Because slack has changed the underground water condition which led to the gathering of underground water at the mudstone cleavage zone, and has decreased the resistance, of which the synthetic 〓 is about 13°, it has made the rock mass about the cleavage slide slsde in the western direction.

从边坡岩体地质力学调查分析、岩体结构分析和采煤对滑坡的影响分析，得出滑坡形成的机理，采煤使P〓岩层中沿NW10°~20°/W15°劈理带贯通而移动，由于松弛改变了地下水条件，使地下水向之集中，该泥质劈理带在过水下摩阻力降低，其综合φ为13°左右，使上覆岩体沿之向西滑动。

Secondly, the dissertation establishes mechanics model of the robot in stationary and moving state and analyses the robot movement.

论文建立了船体表面水下清刷机器人在船体表面处于静止和运动状态下的力学模型，进行了相关的力学分析。

Because of the differences of the faults in active time and position, nearshore subaqueous fans are disjunctive on the plane and overlapped in vertical with the fan deltas.

受断层活动期次和横向活动差异的影响，近岸水下扇具有在平面上与扇三角洲间互出现，剖面上与扇三角洲相互叠置的特点。

The experiment has tested and analyzed the velocity, DO and sludge distribution under different conditions of the rotor and submersed boosters. It also has studied the relations between the treatment effect, sludge deposit, sludge up-floating and the depth of oxidation ditch.

本试验在转刷及水下推动器不同开启状况下的流速分布、溶解氧分布和污泥分布做了测试和分析，研究了处理效果、污泥沉积、污泥上浮和氧化沟沟深之间的关系。

Fifteen gram pyrotechnic composition with thermite content of 25% can produce the sound pressure level as high as 158.8 dB, and the acoustic frequency is mainly 0~5 kHz, then the acoustic energy decreases with the increasing of thermite content.

当高热剂的含量为25%左右时效果较佳，15 g药剂水下燃烧时的声压级达到了158.8 dB，频率主要分布在5 kHz以下，但当超过25%时声能开始下降。

Based on the analysis of the AUV vector thruster control system structure, hardware and software implement strategy is given in detail.

在对水下航行器矢量推进器控制系统体系结构分析的基础上，给出了详细的硬件和软件实现策略。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。