在海底

The main contents and results of research in this paper are shown as following: It is important to built the motion model of a virtual system. As the virtual object is the submarine in this simulation system, we studied on the motion model of the submarine and gave the submarine six DOF space motion equation MultiGen-Paradigm corporation's modeling software named Creator is used, the modeling of all entities and 3D terrain in virtual ocean environment is accomplished. Then introduced the theory of Large Area Database Management and realized the Large area database management; In the course of 3D scene simulation, Vega is utilized to develop the project. The building of 3D scene is done, which includes the simulation of static and dynamic ocean surface, realization of ocean wave, simulation of bow wave and stern wake, utilization of lighting and material, simulation of cloud and fog, kinematics' modeling of submarine etc.

论文的主要研究工作和成果包括以下一些内容：建立虚拟对象的运动模型是构造一个虚拟系统的关键所在，建立的运动模型准确与否直接关系仿真对象模拟的逼真度，由于本仿真系统的虚拟对象是潜艇，所以对潜艇的运动模型进行了研究，给出潜艇空间六自由度运动方程；利用MultiGen-Paradigm公司的Creator建模软件完成虚拟海洋环境中个实体模型建模和三维海底地形模型的建模；然后介绍了大地形数据库管理(LADBM，Large Area Database Management)技术的基本原理，实现大地形数据库管理；在三维场景仿真中，使用Vega驱动软件进行软件开发，完成了三维场景空间的建立，主要包括动态和静态海洋的仿真、海浪、船首波浪和传尾尾迹的实现，灯光和材质的使用，云和雾的模拟等。

To date, mankind has in the worldwide sea, slope, land and trenches, as well as the Arctic region, Siberia region and the Qinghai-Tibet Plateau permafrost zones found in a huge volume of gas hydrates.

迄今，人类已经在世界范围内的海底、陆坡、陆基和海沟，以及北极地区、西伯利亚地区和青藏高原的永久冻土区中发现了巨大体积的天然气水合物。

But at one Sea World park called Discovery Cove, two dolphins collided mid-air, killing one of them.

但是一个叫做 Discovery Cove 的海底世界公园里进行的表演中，两只海豚在空中相撞，其中一只死亡。

My heart is often in the dark floating on the sea, either in the light of the guidelines, which one day will forever Shen Harbour.

我的心常常在黑暗的海上漂浮，要不是得着光的指引，它有一天也会永沉海底。

They'll live 49 feet under the sea in diving bells that form a complex.

他们将呆在位于海底49英尺的潜水钟里，这些钟组成一个联合体。

The device includes a drill spigot inserting into the marebase sand layer through the upper cover soil layer, there sets air inlet, sand discharging pipe and vibration connecting pipe in the drill spigot; there sets a sand absorption head on the bottom of the air inlet and sand discharging pipe; the bottom of the vibration connecting pipe connects with the vibration head; the sand absorption head is made up of a centre cavity, ring cavity and sand absorption pipe.

该装置包括一穿透上部覆盖土层插入到海底深埋砂土层的钻孔套管，在钻孔套管内，设有进气管、排砂管和振动连接管；进气管和排砂管的下端连接一个吸砂头；振动连接管的下端连接振动头；吸砂头由一中心腔室、环状腔体和吸砂管构成。

Caizhu you are not fired, but fell off the seabed Caizhu manipulation, when three same-colored balls or more beads together can be eliminated will be finished on the elimination of the entire chain into the next clearance.

你不是发射彩珠，而是操纵掉下海底的彩珠，当三个同色的珠球或以上在一起就可以消除，将整个链子消除完就进入下一关。

Meanwhile, a second FLAG repair ship continued work on two undersea cables that were cut Jan.

同时，第二艘FLAG公司的维修船继续在对两根于一月三十日切断的海底电缆进行维修。

One of the latest requirements in littoral waters is Rapid Environment Assessment, providing deployed forces and/or vessels with appropriate environmental and oceanographic information of the waters and seabed, such as currents, bathymetry, sound velocity, seabed materials, water visibility and so on.

在滨海水域的一个最新需求是迅速的环境评估，提供部署力量和/或舰艇，同水域和海底的适当环境和海洋学信息，如此被当做当前的、测海学、声音速率、海床物质、海水能见度等等。

"Davy Jones:The bottom of the sea , as personified in songs and stories."

&海神，海妖：海底，在歌曲和故事中拟人化。&

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。