在水下

A numerical model of wave diffraction was established using infinite similar element method,coupled with finite element method,to obtain wave force on a vertical cylinder of arbitrary cross section.

在海岸和近海工程中，如海上平台、离岸式码头及防波堤等大型建筑物，它们的水下结构往往是由一系列墩柱组成，这类构筑物的主要外力之一是作用在它上面的波浪力[1—2]。

By simulating the absorption spectrum of molecule iodine absorption filter ranges from 470nm~550nm, this paper selects the absorption spectrum of molecule iodine absorption filter that satisfies the requirement of frequency discriminator in detecting system and ascertains the center emission frequency of laser emitter.

以基于边缘探测技术的激光雷达监测大气信道和海洋水下信道环境参数为例，通过仿真出碘分子吸收滤波器在470nm～550nm区间范围内的吸收光谱谱线，选择出合适的吸收谱线并确定发射激光信号的中心频率，并在此基础上，给出了满足探测要求的激光发射信号单稳频指标，为实际探测系统的设计奠定基础。

When combined with the entire Zumwalt open architecture combat system and multi-sensor capabilities, the SQQ-90 will provide the U.S. Navy with the most advanced integrated undersea warfare system in the world, bringing superior operational performance in both the littorals and the open ocean against a multitude of targets, including mines and quiet diesel submarines.

在与＂朱姆沃尔特＂驱逐舰整个的作战系统和多传感器集成后，AN/SQQ-90将使＂朱姆沃尔特＂驱逐舰拥有世界上最先进的集成水下作战系统，在濒海地区以及开放海域拥有更强的能力，可以对付包括水雷和静默柴油潜艇的多种目标。

House reef diving is available on demand and the staff even transport your kit to and from your entry/exit point for you - after struggling in and out of freezing scottish lochs with enough kit to challenge an olympic weightlifter this is diver heaven.

若要求去岛屿周围水下潜水也是可以的，工作人员甚至会在进水口或出水口为你准备好潜水装备，与戴着沉重（堪比奥运举重运动员举重）的潜水装备在苏格兰冰冷的海湾潜泳相比，这里就是潜水天堂。

At night the flower closes and sinks underwater, at dawn it rises and opens again.

在晚上结束的花和汇水下，它在黎明上升，再次打开。

From the dazzling underwater seascapes of Australia's Great Barrier Reef to the mysterious deep ocean corals of Fiji, and from the azure skies above Tahiti to shark-filled canyons off isolated Rangiroa, the Halls visit many reefs that are flourishing and capture on film many interesting reef inhabitants.

在令人眼花缭乱的水下海景澳大利亚大堡礁的神秘斐济深海珊瑚，从上述塔希提岛蓝色的天空，以填补关闭孤立朗伊峡谷，在大厅里参观的蓬勃发展和捕捉电影许多有趣的许多居民礁礁鲨。

There exists a square-built river mouth bar system composed of tidal shoals alternating with channels in the gateway and a large delta under water outside the gateway reaching near to 123°E.

在它们的口门有一个宽阔的拦门沙系统，由滩槽相间组成，在其口外有一个巨大的水下三角洲，其前缘最远处可及东经123°附近。

A kind of self-closed joint used for two oil citcuit connect ions of underwater robot is introduced in the paper. The joint is composed of tw o members which are mounted in the tool and the wrist.

本文针对水下机器人在作业工具自动换接过程中的油路快速换接问题，提出了一种压差式快速自封接头，利用它可以在水中实现两液路的快速对接。

Red pretty much disappears at a depth of 30 feet, Reynolds explains, while lingcod spend most of their lives down at 100 to 200 feet.

红色在30英尺（1英尺=30.48厘米）的深度就基本上消失不见了。雷诺兹解释说，蛇鳕大部分时间生活在100至200英尺的水下。

The detailed works are as follows: 1. Realization of numerical simulation for rotationally asymmetric sound absorbent structures by finite element method.

具体工作在如下两方面：(1)具有旋转对称腔体和非对称基材单元的水下吸声结构声学特性在数值仿真的实现。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐