子午线

In fact, a triangle formed for example, by the northern halves of two meridians and the section of the equator between them, will have two right angles at its base and an arbitrary angle at the top-a sum clearly greater than two right angles.

实际上，比如说，一个由北半球的两条子午线和它们之间的部分赤道组合成的三角形，将有两个直角作为底角，还有一个为任意角度的顶角-很显然它的内角之和比两个直角和要大。

Due to relative stability of 'biological clock", one passing several time zones over median, inner biological clock will be out of step with environmental time, which is called "Jetlag.

由于"生物钟"的相对稳定性，跨子午线快速跨越若干个时区飞行，即可造成体内的"生物钟"与环境时间失去同步关系，称为"时差"。

Meridian Design is also working with a partner to develop a different kind of solar-powered purification system. This one will would make a calory chlorine -based disinfectant out of salt add it added to water. The goal there is to be able to store large amounts of water and keep it disinfected.

子午线公司也正与一合作伙伴共同开发中另一不同的太阳能驱动洁净系统，此系统将从盐中提取以氯为基础的消毒剂，并将其加于水中，其目的是能贮存更大容量的水，并完成消毒工作。

Pairs of GPS hand-book set of parameters, including a reference to prop up the ball, using the coordinate system, the central meridian, projection models, and a known point data, radio frequency, etc., should be used on your system and to be carried out by full understanding of the task, the only way the process of conducting the tests, in order to ensure that the entire system to work properly.

2对GPS手簿中的参数进行设置，其中包括参考托球、所采用的坐标系、中央子午线、投影模型以及已知点数据、无线电频率等等，要对你所采用的系统和所要进行的任务有充分的了解，只有这样在进行测量的过程中才能保证整个系统正常的工作。

The paper introduced the outline of Chinese geocoordinate system and determination principles of engineering control network coordinate system and also introduced the methods of selection and decision of central meridian and projection plane of engineering control network.

该文介绍了我国大地坐标系的概况，阐述了工程控制网坐标系的确定原则，以及工程控制网中央子午线和投影面选择和确定的方法。

A conic map projection having distances between meridians equal to those distance on a globe.

一圆锥形地图投影图其上线的距离与地球上的子午线等距离。

At any point the convergence is the angle between the meridian as represented on the plane and the N grid line.

一点上的收敛角是子午线在平面上的投影与N坐标线之间的角度。

In view of the tedious and mistakable manual calculation in measuring Gauss projection,coordinate zone transformation and meridian convergence,an itera-tive approximation method is adopted and programmed by BASIC to imple-ment the direct and converse calculation of Gauss projection and computer cal-culation of meridian convergence angle.

针对测量工作中人工进行高斯投影、坐标换带和平面子午线收敛角计算非常麻烦又容易出错的问题，采用迭代法趋近求值，用BASIC语言编制了相应的计算机程序，实现了上述计算。

In plotting scene, the invention connects fiber-optic gyro(1) with full station instrument telescope(3) by adaptor(2), and make optical fibre gyro can follow full station instrument telescope simultaneously do 180 degree turning reel full station instrument cross shaft, respectively on two horizontal positions of east and west direction of gyro axis that differ by 180 degree; each horizontal position process 2 x 2 position gyro data acquisition on full station instrument perpendicular tray that differ by 180 degree; using formula to count out full station instrument collimation axis true azimuth, survey station meridian convergence angle, then can obtain full station instrument collimation axis grid azimuth, realize full station instrument orient.

基于光纤陀螺的全站仪组合定向方法是一种应用于测绘工作的基于光纤陀螺的全站仪组合定向方法，该方法在测绘现场，把光纤陀螺(1)通过连接装置(2)与全站仪望远镜(3)固连，使光纤陀螺(1)可随全站仪望远镜(3)绕全站仪横轴(4)同步做180度转动，分别在陀螺轴东西向相差180度两个水平位置，每个水平位置在全站仪竖盘相差180度的两个竖直位置进行2×2位置陀螺数据采集；利用公式算得全站仪视准轴真方位角、测站子午线收敛角，即可进一步获得全站仪视准轴坐标方位角，实现全站仪定向。

Tte also suggest a possible comparison with the Ediacara trilobozoan fossils-Albumares and Anfesta from the shores of the White Sea in Russia. The re-cent discovery of a few skewed E. octobrachiata and walnut-shaped fossils with several carbonaceous meridian bands believed to represent lateral compressions of the same organism strongly suggests that this octoradial fossil is a ctenophoran.

新发现的倾斜保存的八臂仙母虫化石和碳质条带呈子午线状排列的核桃状化石，可能是该类化石归属栉水母类的有力证据，这一发现推测可将栉水母类的最早化石记录从"澄江生物群"的早寒武世推前大约3千万年。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。