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It is the world's oldest and most rare, the longest life span of fish.

它是世界上最古老、最珍奇、寿命最长的鱼类。

And then his expected life span ran out.

他预期的寿命结束了。

The winning design is a 350 metres long, 17 metres wide suspension bridge that will span the Liffey Valley 9 kilometres west of Dublin.

这个成功的设计是一座有350米长，17米宽的吊桥，这座吊桥跨越了都柏林西部9千米的利菲河山谷。

The essay discusses the calculation and selection of body-form co-efficient for double contact lines suspension in urban mass transit, analyzes the affection from wind displacement of contact line, calculation of span , curvature of mast and calculating load and recommends that the shield between contact lines shall be considered for wind load of multi-contact lines.

对城市轨道交通双导线接触网悬挂风载体型系数进行了计算选用方面的探讨，并对接触线风偏移、计算跨距、支柱挠度和计算荷载的影响进行了分析，建议多导线的风载情况应考虑导线间的屏蔽作用。

During cantilever casting of long span prestressed concrete continuous box beams, the construction control, a complicated and dynamic system engineering, is an important measure for bridges to ensure their lineament and to meet the design requirement of the internal force.

大跨径预应力混凝土连续箱梁悬臂浇筑施工过程中，施工控制是个复杂的动态系统工程，是实现大桥成桥线形、内力满足设计要求的重要手段。

In this thesis, based on a simple piece-wise linear map, a chaotic FH code featuring good balance property, hamming correlation property and large FH span is developed.

众所周知，设计好的跳频码和在混沌跳频通信系统中实现收发双方的同步是很困难的。

It relies on the facts that the rows composed of all the image points span the same linear subspace as the rows composed of the 3D space points and that the basis of the subspace can consist of the two rows composed of the first image points and a row vector which is orthogonal to the former.

所有图像序列构成的行向量与3维空间点构成的行向量所生成的子空间是同一线性子空间，而且由第1幅图像点构成的2个行向量外加1个行向量就可以组成该子空间的一个基底。

An iterative factorization method based on linear subspace for projective reconstruction is presented in the paper. It relies on the facts that the rows in the matrix including all the image points span the same linear subspace as the rows in the matrix including space points and the fact that any basis of the subspace can be regarded as projective reconstruction. The projective reconstruction and the depth factors are obtained based on linear iteration.

摘要该文提出了一种基于子空间线性迭代的射影重建方法，该方法利用所有的图像序列构成的行向量生成的线性子空间之和与射影重建结构点构成的行向量生成的子空间是同一线性子空间及在该子空间中任何一个基底都可以作为射影重建的特性，线性迭代地求取射影重建及图像深度因子。

For different economic systems, the span of a long wave are likely different, and the expectancy period of a long wave is about 50 year.

这种现象是由经济系统的一种内在的作用力所导致的。

However, there are still some problems of OLED, including life-span, luminescence efficiency, the stability, etc.

针对这些存在的问题，对有机器件研究方面所做的越来越多的努力被认为是进一步发展半导体工业的有效途径。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。