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- Two kinds of methods to add reverse magnetic field have been recommended, one is adding compensating Helmholtz coils, another is applying direct current to the rapid scan sweep coils of ESR spectrometer. 本文介绍两种附加反向直流磁场的实验方法;即外加补偿的亥姆霍兹线圈;或直接借用ESR谱仪本身的快扫描线圈;来实现过零扫描.
- An indicator that the sun's magnetic field is reversing is the appearance of sunspots with the reverse magnetic polarity than normal. 太阳磁场正在倒转的一个指示，就是出现太阳黑子发生磁极颠倒的现象。
- Our army suffered a slight reverse. 我们的部队受到轻微的挫败。
- Dalian is a magnet for tourists. 大连是吸引游客的地方。
- The 50p coin has a crowned lion on its reverse. 50便士硬币反面的图案是个戴皇冠的狮子。
- I twisted my head round to reverse the car. 我扭过头去把汽车向後倒。
- The car has four forward gear and one reverse gear. 那汽车有四个前进挡和一个倒挡。
- This disco is a magnet for young people. 这家迪斯科舞厅经常吸引大批年轻的顾客。
- The reverse of the coin was stamped with an eagle. 硬币的反面压印的是一只鹰。
- She then looked at the reverse side of the coin. 接着她看了看钱币的反面。
- Children's shoes aren't cheap quite the reverse. 儿童的鞋并不便宜--反而更贵。
- A magnet attracts both iron and steel. 磁铁吸铁也吸钢。
- Certain metals are attracted to a magnet. 某些金属会受磁石的吸引。
- In the opposite way or reverse order. 正相反在方向或顺序上的正好相反
- The superpowers are putting the arms race into reverse. 超级大国正在把军备竞赛转换成相继裁军。
- Human beings have learned out how to make magnet of cast iron. 人类已经学会如何从生铁制出磁铁。
- Forbidden City is a great magnet for foreign tourists. 紫禁城对外国旅游者来说是个有巨大吸引力的地方。
- The car has four forward gears and one reverse gear. 那汽车有四个前进挡和一个倒挡。
- Only on rare occasions do the thermodynamics work; the fluid motions and the magnetic field all evolve in a compatible manner,so the new dipole polarity can diffuse in and establish a reversed magnetic field. 只有在很少的情况下热力学才发挥作用，此时流体运动和磁场都会以相互访调的方式演化，这样新的偶极性就会散开并建立一个倒转的磁场。
- Only on rare occasions do the thermodynamics work; the fluid motions and the magnetic field all evolve in a compatible manner, so the new dipole polarity can diffuse in and establish a reversed magnetic field. 只有在很少的情况下热力学才发挥作用，此时流体运动和磁场都会以相互访调的方式演化，这样新的偶极性就会散开并建立一个倒转的磁
