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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. 本文介紹兩種附加反向直流磁場的實驗方法;即外加補償的亥姆霍茲線圈;或直接借用ESR譜儀本身的快掃描線圈;來實現過零掃描.
- An indicator that the sun's magnetic field is reversing is the appearance of sunspots with the reverse magnetic polarity than normal. 太陽磁場正在倒轉的一個指示,就是出現太陽黑子發生磁極顛倒的現象。
- Our army suffered a slight reverse. 我們的部隊受到輕微的挫敗。
- Dalian is a magnet for tourists. 大連是吸引遊客的地方。
- The 50p coin has a crowned lion on its reverse. 50便士硬幣反面的圖案是個戴皇冠的獅子。
- I twisted my head round to reverse the car. 我扭過頭去把汽車向後倒。
- The car has four forward gear and one reverse gear. 那汽車有四個前進擋和一個倒擋。
- This disco is a magnet for young people. 這家迪斯科舞廳經常吸引大批年輕的顧客。
- The reverse of the coin was stamped with an eagle. 硬幣的反面壓印的是一隻鷹。
- She then looked at the reverse side of the coin. 接著她看了看錢幣的反面。
- Children's shoes aren't cheap quite the reverse. 兒童的鞋並不便宜--反而更貴。
- A magnet attracts both iron and steel. 磁鐵吸鐵也吸鋼。
- Certain metals are attracted to a magnet. 某些金屬會受磁石的吸引。
- In the opposite way or reverse order. 正相反在方向或順序上的正好相反
- The superpowers are putting the arms race into reverse. 超級大國正在把軍備競賽轉換成相繼裁軍。
- Human beings have learned out how to make magnet of cast iron. 人類已經學會如何從生鐵制出磁鐵。
- Forbidden City is a great magnet for foreign tourists. 紫禁城對外國旅遊者來說是個有巨大吸引力的地方。
- The car has four forward gears and one reverse gear. 那汽車有四個前進擋和一個倒擋。
- 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. 只有在很少的情況下熱力學才發揮作用,此時流體運動和磁場都會以相互訪調的方式演化,這樣新的偶極性就會散開並建立一個倒轉的磁場。
- 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. 只有在很少的情況下熱力學才發揮作用,此時流體運動和磁場都會以相互訪調的方式演化,這樣新的偶極性就會散開並建立一個倒轉的磁