查询词典 shallow water

A new bionics propulsion equipment—fishlike flexible tail fin propulsion equipment is brought forward,because there are some problems in present thrusters,such as big noise,low propulsion efficiency in shallow water and evident wake.

本文针对现有船用螺旋桨、泵喷等常规推进器存在噪音大、浅水中船舶推进效率不高以及尾迹明显等缺点，提出一种新型仿生推进装置—仿鱼尾柔性尾鳍推进装置，并据此展开了对单翼板柔性尾鳍和双翼板柔性尾鳍模型的计算和实验研究，本文工作属于鱼类生物流体力学、机械学、材料学和控制技术等多学科交叉的一个新兴研究领域。

Although this is an often flat-bottomed sailing boat in shallow water, but the bow, stern and two side or the shape of a certain request.

虽然这是一艘经常航行在浅水里的平底帆船，但对船首、船尾和两舷的形状还是有一定要求的。

The derivatives of the nonsmooth equations are computed to make the generalized derivative matrix nonsingular. Then the nonsmmoth damped Newton method is used to solve them.Analytic solutions of the KdV equation with variable coefficients: Shallow water wave problems belong to problems of free surface wave, and can be molded by the nonsmooth equations model given above in principle.

在前面建立的非光滑方程组数学模型和固定网格法基础上，利用广义导数的概念给出了求解渗流自由面的一种新方法-----非光滑阻尼牛顿法，该法是对非光滑方程组求导，适当的处理广义导数矩阵使其非奇异，利用非光滑牛顿法求解。

Tropical fish that resembles a goby and rests quietly on the bottom in shallow water.

与虾虎鱼相象的热带鱼，在浅水底静卧。

Most source rocks of the large marine oil-gas fields in domestic and overseas are graptolite shale, oil shale and marl with great amounts of clay mineral, which formed in the deepwater slope environment transferred from tableland to trough.But the carbonate rock is formed in the shallow water environment under good exchanging condition with atmosphere, which causes the low abundance of organic matter and poor-type kerogen.

国内外海相大油气田的烃源岩多为黏土矿物含量较高的泥页岩、油页岩和泥灰岩，形成于由台地向海槽过渡的深水斜坡环境，而碳酸盐岩形成于与大气交换条件较好的浅水环境，是有机质丰度低和干酪根类型差的根本原因。

Renowned landscape design company Hassel introduced European popular linear landscape design ideas to the small town planning, landscape belt extends to all corners of the small town, there is also a small 6000 square meters of shallow water designed landscape belt.

著名景观设计公司Hassel采用了欧洲流行的线性景观设计思路来规划小镇，景观带延伸到小镇的各个角落，小区里还设计了6000平方米左右的浅水景观带。

A thermometer thrust into the middle of Walden on the 6th of March, 1847, stood at 32x,or freezing point; near the shore at 33x; in the middle of Flint's Pond, the same day, at 32+x; at a dozen rods from the shore, in shallow water, under ice a foot thick, at 36x.

一八四七年三月六日，一只温度表插入瓦尔登湖心，得三十二度，或冰点，湖岸附近，得三十三度；同日，在弗灵特湖心，得三十二度半；离岸十二杆的浅水处，在一英尺厚的冰下面，得三十六度。

The main contents include studying purpose, researching object, the introduction about this course; governing equations, boundary conditions for an inviscid irrotational flow, linearized approximation for small-amplitude waves; illuminations of wave factors and relevant physical variables; the propagating waves in deep and shallow water; discussion of physical meanings of group velocity.

包括学习目的、研究对象、主要内容简介；控制方程，描述无粘、无旋运动的边界条件，对边界条件的线性化近似；波要素和有关物理量的介绍；深水和浅水条件下的行波问题；讨论群速度的物理意义。

Animal taxonomists described as a "living fossil" of the amphioxus, in the shallow water near the 15 m isobath density of 1035 / m, think about with these "living fossils" with swimming in a region, which can not but make you feel shock.

被动物分类学家誉为"活化石"的文昌鱼，在浅海15米等深线附近密度达到1035尾／平方米，想想能够与这些"活化石"同在一个区域游泳，这不能不使你感到震撼。

In this paper, an all fluid Kraken normal model is employed to analyze the propagation characteristics of shallow water channels.

本文采用了一种全液态Kraken简正波模型，对位于浅海信道的目标海区的传播特性进行分析，得到了不同传播条件下信道的传播损失和频率特性图，为水声通信系统的设计提供了理论基础。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。