查询词典 fin

A simplified kinematic model on locomotion of the undulatory long dorsal fin propulsion is based on the the observation and experimental data.

在"尼罗河魔鬼"巡航游动试验的基础上，通过对鱼体几何形态和柔性长背鳍波动的运动学分析，建立了"尼罗河魔鬼"长背鳍波动推进的简化运动学模型，并利用大摆幅伸长体理论分析了长背鳍波动推进的水动力学特性。

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。

Unpaired median fin on the backs of fishes and some other aquatic vertebrates that help to maintain balance.

鱼类和其他水生脊椎动物背部帮助保持平衡的奇鳍。

In this April 3, 2009 photo, a robotic tail fin, whose actions are dictated by microprocessors housed in an attached Tupperware container, is seen in professor John Long's Vassar College science lab in Poughkeepsie, NY Long is among a small group of researchers worldwide building robots that can do things like shimmy through water or slither up shores to aid the study biology and evolution.

在这09年4月3日的照片，机器人尾翼，其行动是由微处理器，住在一个重视特百惠容器，是在教授约翰龙的瓦莎学院科学实验室在北京市东城区龙是一小群世界各地的研究人员建设机器人可以做的事情一样摆通过水或滑行了海岸援助和进化生物学研究。

It was necessary to be able to see the ventral fin from the control car, so the fins were modified.

降低了腹鳍的强度，便于在控制吊舱中能看到它。

It was decided that it was necessary to be able to see the ventral fin from the control car, so the fins were modified.

降低了腹鳍的强度，便于在控制吊舱中能看到它。

This is two halves of a ventral fin mold, one half of which was allowed to catalize on my building table, the other half being cast at about 60PSI in my pressure pot.

这是两半的一腹侧鱼翅模具，一，其中一半被允许catalize对我的建设表，另一半被投下约60psi在我的压力罐。

Voracious snakelike marine or freshwater fishes with smooth slimy usually scaleless skin and having a continuous vertical fin but no ventral fins.

任一种蛇形的淡水鱼，体表光滑无鳞，有连续的垂直背鳍，缺少腹鳍。

Relating to, designating, or characterized by a tail fin having two symmetrical lobes extending from the end of the vertebral column, as in most bony fishes.

正尾的，等形的与一种尾鳍有关的或以其为特点的，这种尾鳍有对称的两叶从脊椎一头延伸出来，大多数多骨鱼均如是

Diamond Head is the name of a volcanic tuff cone on the Hawaiian island of O?ahu and known to Hawaiians as Lē?ahi, most likely from lae 'browridge, promontory' plus ?ahi 'tuna' because the shape of the ridgeline resembles the shape of a tuna's dorsal fin.

钻石头的名字是火山凝灰岩锥的夏威夷群岛的瓦胡岛和已知夏威夷作为Lēahi ，最有可能从角' browridge ，海角'加阿伊'金枪鱼'，因为形状的山脊线的形状类似于一个金枪鱼'县背鳍。

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