1.
Occasionally, however, the dipole part of the field reverses, causing the locations of the north and south magnetic poles to switch.
不过，有时候磁场的偶极部分会倒转，导致了北磁极和南磁极的位置转换。
2.
It has been suggested that birds can sense the magnetic lines of force stretching from the north to south magnetic poles of the earth, and so direct themselves.
有人认为，鸟类能觉察得出地球自北向南磁极的磁力线，因而能为自己导向。
3.
Around a bar magnet, for example, the lines of force point from the north pole to the south.
例如，在磁铁棒周围的磁力线从北极指向南极。
4.
A distinction between positive(north)and negative(south)magnetic poles of an electromagnet or permanent magnet.
一种电磁体或永磁体的南北磁极之间的区别。
5.
The North magnetic pole is located to the south in Northern Canada;
北磁极坐落于北部加拿大以南；
6.
MAGNETOTELLURIC DEEP SOUNDING STUDY IN THE REGION OF ZHONGSHAN STATION,EAST ANTARCTICA
东南极中山站地区大地电磁测深研究
7.
The Realization of Reduction-to-the-pole of △T Magnetic Anomaly in the Southern South China Sea
南沙海域及邻区△T磁异常化极的实现
8.
Every planet that has a magnetic field has a northern point and a southern point.
每个有磁场的行星都有北极点和南极点。
9.
( Compass needles point to the earth's north geographic pole because the dipole's south magnetic pole lies near it.
（北针的磁针之所以会指向地球的地理北极，就是因为上述偶极的磁南极正好在那附近。
10.
ANALYSES OF GEOMAGNETIC PULSATIONS IN ANTARCTIC REGION DURING MAGNETIC STORM ON MARCH 24, 1991
1991年3月24日磁暴期间南极地区地磁脉动的分析
11.
CHANGE CHARACTERISTICS OF MAGNETIC STORM IN ANTARCTIC ZHONGSHAN STATION AND BEIJING MING TOMBS MAGNETIC OBSERVATORY CENTER OF CHINA ON MARCH 24,1991
南极中山站与北京地磁中心台1991年3月24日磁暴的变化特征
12.
Magnetic minerals trapped inside ancient rocks have recorded hundreds of these so-called polarity reversals in the past500 million years.
在地磁反转后，指北针的指针会指向南极，而不再是冰冻的北极。
13.
It has been suggested that birds can sense the magnetic lines of force stretching from the north to the south magnetic poles of the earth .
有人提出：鸟能感觉到从地球北极通向南极的磁力线。
14.
the geographic South Pole is at the center of the Antarctic continent, but the magnetic pole is hundreds of miles away, near the coast.
地理南极在南极大陆的中央，但是磁极却离此数百英里，在海岸带附近。
15.
A test with a magnet and a compass shows that N-poles and S-poles attract each other, but that two N-poles or two S-ploes repel each other.
磁铁和指南针的实验表明N极和S极互相吸引，两个N极或两个S极互相排斥。
16.
The magnetic North and South poles have shifted before in the course of the planet's history- one result being the last Ice Age.
在地球的历史进程中地磁北极和磁南极已经转换过-一种结果就是最后的冰河时期。
17.
Guide to the specification of limits for physical imperfections of parts made from magnetic oxides
GB/T9634-1988磁性氧化物零件外形缺陷极限规范的指南
18.
FIRST GEOMAGNETIC-AERONOMIC OBSERVATIONS SUCCESSFULLY OBTAINED AT CHINESE ANTARCTIC STATION IN KING GEORGE ISLAND(62°13＇S,58°57＇W)
我国南极考察队在乔治岛首次进行地磁与高空物理观测