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bar magnetic compass 磁杆罗盘
The creatures have their own inbuilt magnetic compass. 这些生物有它们内在的磁罗盘。
The needle of a magnetic compass points to the magnetic north pole. 磁性罗盘上的指针指向北方磁极。
The first thing we tried was wrapping some wire around a magnetic compass. 我们尝试的第一件事是在一个指南针的外面缠绕上导线。
The magnetic state of a bar magnet or a horseshoe magnet is extremely complicated. 条形磁铁或马蹄形磁铁的磁态是极其复杂的。
The form of the stable geomagnetic field is like that of a bar magnet at the center of the Earth. 稳定地磁场的形状与地球中心的棒磁铁的形状相似。
A magnetic compass bearing. 可分辨磁极方向的罗盘
If the bar magnet is simply held stationary near the coil, no current is indicated. 如果磁棒单纯静止在线圈附近，就检测不到电流。
If we could make an electromagnet strong enough, it would move the needle of a magnetic compass. 如果可以使得电磁场足够强,那么就会使指南针中的指针转动。
Because the core current is somewhat symmetrical around the axis of rotation, the associated magnetic field is similar to that of a bar magnet. 因为地核流在旋转轴周围存在着一些对称，所以相关的磁场与棒磁铁的磁场相似。
A slender magnet suspended in a magnetic compass on a low-friction mounting; used to indicate the direction of the earth's magnetic pole. 在低磨擦力的磁性罗盘内悬挂的小的磁体;确定地球磁的方向。
Fluid iron in the planet's core acts like a huge bar magnet, creating a relatively weak magnetic field. 地心处的液态铁就像一个巨大的条形磁铁，会形成相对较弱的磁场。
We have sextants and magnetic compass on board. DF will carry on when emergency. 我船有六分仪和磁罗经.;紧急情况时可以使用无线电测向仪
This was supplanted in the early 20th century by the liquid-filled magnetic compass. 直到20世纪早期才被流体填充磁性罗盘取代。
Because the core current is somewhat symmetrical around the axis of rotation,the associated magnetic field is similar to that of a bar magnet. 因为地核流在旋转轴周围存在着一些对称，所以相关的磁场与棒磁铁的磁场相似。
The birthplace of paper, printing, gunpowder, and the magnetic compass turned inward, uncreative, and xenophobic. 造纸术、印刷术、火药和指南针四大发明的故乡变得内向、排外和缺乏创造性。
If the sun were a rigid body, its magnetic field might resemble the earth's, with symmetrical field lines like a bar magnet's. 如果太阳是一颗固体星球，其磁场或许与地球磁场相似，像条状磁铁那样具有对称的磁力线。
For the azimuth angle (sideways) use a magnetic compass and swing the dish boldly sideways to find the satellite on the first swing. 至于方位角角度(斜向一边的)使用一个磁性指南针和大胆地摇摆盘斜向一边发现卫星在第一摇摆。
If the sun were a rigid body, its magnetic field might resemble the earth's , with symmetrical field lines like a bar magnet's. 如果太阳是一颗固体星球，其磁场或许与地球磁场相似，像条状磁铁那样具有对称的磁力线。
The present magnetic compass has some problems need to be solved such as big volume, weight , power consume, harding to debug , compensate error. 已有磁罗盘面临的体积、重量、功耗大，调试、误差补偿困难等问题亟待解决，在微控制器广泛应用的今天，利用磁阻器件和单片机实现集成化和智能化成为改善磁罗盘性能的有效方法。本文正是在此基础上研制出了具有倾角补偿功能的磁阻电子罗盘。