查询词典 declination compass

Moreover, Gilbert was the first to systematically study phenomena caused by the earth's magnetism; he was the one who proved that the compass needle always points to the magnetic north pole of the earth.

威廉吉尔伯特（ 5月24日1544至30年1603年11月）是伊丽莎白一世的王室医生。此外，吉尔伯特是第一个系统研究的现象所造成的地球磁场，他是一个谁证明，磁针总是指向磁北极的地球。

Think of the earth as having a big bar magnet stuck through it, with the southern end located at the magnetic north pole. The northern end of the compass will point toward the magnetic north pole.

想像有一根大磁条穿过地球，磁条的S极设置在地理北极附近，因此指南针的N极会指向地球的北磁极。

But our knowledge only skims the surface of the problem. A single example will serve to illustrate my point: It is true that because the north magnetic pole of the earth places in Antarctic so compass direct to southward, but why?

如果深入探究为何我们缺乏探究这种意识，相比其他国家我们缺乏创新精神，AlecXu提出来思路，就是我们的教育或者整个环境是主因。

They can track the earths magnetic field as sensitively as a compass needle.

它们对地球磁场也十分敏感，如同使用了指南针。

So with the three passengers shut up i' the narrow compass of one lumbering old mail-coach; the were mysteries to one another, as complete as if each ha been in his own coach and six, or his own coach and sixty, with the breadth of a county between him and the next.

因此关在那颠簸的老邮车的狭小天地里的三个乘客彼此都是奥秘，跟各自坐在自己的六马大车或是六十马大车里的大员一样，彼此总是咫尺天涯，奥妙莫测。

A compass is usually considered mandatory but you have to be careful using it.

指南针通常被认为是强制性的，但你要小心使用。

But what is more surprising is that even a contrived mariner''s compass was used by Indian navigators nearly 1500 to 2000 years ago.

但更加令人惊讶的是，即使是一个做作的水手指南针也几乎在1500到2000年前的印度航海业上使用。

In a Mercator projection, the north and south poles are spread out, resulting in a map with equally spaced longitudes and latitudes, and a constant compass bearing.

在麦卡托投影（一种制作地图中所采用的投影方式）中，南北两极会被拉伸，使得地图具有相等的经纬度间隔，和固定的罗盘方位。

With my help," Tipper recounted,"Sobel was able to mislay his maps, compass, and other items when he most needed them.

由于我的'帮助'，"蒂波讲述说，"索贝尔就总是在最需要的时候把地图、罗盘和其他一些东西放错地方。

Finally, at the COMPASS force field of Molecular Mechanics, Molecular Dynamics method is used to simulate the melting process and to predict the melting point of NG.

最后在分子力学方法力场下，以分子动力学方法模拟了硝化甘油的熔化过程，预测其熔点(360K)，分析了熔化前后硝化甘油多种性质的变化。

There had been a moment during the breakfast meeting, though, after the backslapping and the small talk and when all of us were seated, with Vice President Cheney eating his eggs Benedict impassively and Karl Rove at the far end of the table discreetly checking his BlackBerry, that I witnessed a different side of the man.

那次早餐会期间，在表示过关心和寒暄以后，我们所有人坐了下来，我注意观察了一下，副总统切尼面无表情地吃着班尼迪克蛋（Eggs benedict，源自美国，以英式松饼、火腿、水煮蛋以及荷兰酱组合而成），卡尔。罗夫在餐桌的远端谨慎地经常查看他的黑莓手机，我目睹了他所不为人知的一面。

Talk Undelete failed; someone else may have undeleted the page first.

Talk 无法删除选定的页面或图像（它可能已经被其他人删除了）。