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- Because of the complexity of the Earth's magnetic field and the constant changes it is impossible to predict what the field will be like anytime in the distant future. 因为地球磁场和持续变化的复杂性，要预测磁场在遥远的未来将是什么样子的是不可能的。
- It shows the presence of a magnetic field. 这表明有磁场存在。
- The magnetic field of the earth creates a torque around the pivot. 地球的磁场在支点周围产生一个转矩。
- Uranus does have a magnetic field even stronger than Earth's. 天王星确实有磁场，甚至比地球的磁场还大。
- Usually the earth's magnetic field acts as a shield. 平常，地球磁场构成了一个保护屏。
- Pigeons navigate less accurately when the earth's magnetic field is disturbed. 地球磁场受到干扰时，鸽子的道航能力就会变得不准确。
- Detected in a distant protogalaxy, it measures at least 10 times greater than the average magnetic field in the Milky Way. 这个强磁场是在遥远的原星系中探测到的，经测量比银河系的平均磁场至少强出10倍。
- The earth's magnetic field protects us from the sun's harmful radiation. 地球磁场让我们免受太阳辐射的伤害。
- Can Magnetic Field Drill through a Piece of Iron? 磁场能穿过铁片吗?
- The string is in a magnetic field. 振动弦处于磁场之中。
- The force exerted by a magnetic field. 力由磁场施加的力。
- The lines of force of a magnetic field. 磁力磁场的磁力线
- A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth. 指南针用于确定地理方向的设备，通常包括一个或多个水平安装或悬挂的磁针，可在枢轴上自由活动直到与地球磁场在一条线上
- The class of phenomena exhibited by a magnetic field. 磁性磁场显示的一组现象
- The current in the conductor sets up a magnetic field. 导体里的电流形成一个磁场。
- A third radiation group was unaffected by the magnetic field. 第三组射线不受磁场的影响。
- We might put the current-carrying wire in a magnetic field. 我们可将载流导线置于磁场中。
- The Van Allen belts are composed of charged particles trapped by the earth's magnetic field. 范阿伦带由地球磁场俘获的带电粒子所组成。
- Don't bend or stain and avoid magnetic fields. 不要弯折、污损，并避开磁场。
