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- Magnetic field, auroras,magnetic declination and magnetic field reversals. 地球的磁場(chǎng)、極光、磁偏角和地磁極倒轉。
- Occasionally, however, the dipole part of the field reverses, causing the locations of the north and south magnetic poles to switch. 不過(guò)，有時(shí)候磁場(chǎng)的偶極部分會(huì )倒轉，導致了北磁極和南磁極的位置轉換。
- The reversal process is not literally periodic as it is on the sun,whose magnetic field reverses every 11 years. 倒轉過(guò)程不是真正具有像在太陽(yáng)上那樣的周期性，太陽(yáng)磁場(chǎng)每11年出現倒轉。
- The reversal process is not literally periodic as it is on the sun, whose magnetic field reverses every 11 years. 倒轉過(guò)程不是真正具有像在太陽(yáng)上那樣的周期性，太陽(yáng)磁場(chǎng)每11年出現倒轉。
- Occasionally,however,the dipole part of the field reverses,causing the locations of the north and south magnetic poles to switch. 不過(guò)，有時(shí)候磁場(chǎng)的偶極部分會(huì )倒轉，導致了北磁極和南磁極的位置轉換。
- So the rare field reversals are most likely caused by larger changes in the flow in the outer core, or in the way in which the field lines are wound into the flow by diffusion. 這樣，不經(jīng)常發(fā)生的磁場(chǎng)倒轉，很可能是由外核流體或磁場(chǎng)曲線(xiàn)通過(guò)擴散宛然進(jìn)人流體方式發(fā)生較大的變化而引起的。
- So the rare field reversals are most likely caused by larger changes in the flow in the outer core,or in the way in which the field lines are wound into the flow by diffusion. 這樣，不經(jīng)常發(fā)生的磁場(chǎng)倒轉，很可能是由外核流體或磁場(chǎng)曲線(xiàn)通過(guò)擴散宛然進(jìn)人流體方式發(fā)生較大的變化而引起的。
- As the field wanes, the number of sunspots falls to a trough or minimum, at which point the sun's magnetic field reverses direction and starts to regain its strength. 隨著(zhù)磁場(chǎng)減弱，太陽(yáng)黑子的數量會(huì )減少到最小值或者說(shuō)最低點(diǎn)（波谷），然后太陽(yáng)的磁場(chǎng)就會(huì )反方向運動(dòng)，開(kāi)始重新變強。
- The field artillery pounded away at the for tress. 野戰炮兵連續炮擊那座要塞。
- The geologic record also shows that the strength of the magnetic field varies widely in time, and fluctuates wildly during field reversals, sometimes dropping to zero gauss strength; ie: the field vanishes, disappears! 地質(zhì)記錄也表明磁場(chǎng)強度在時(shí)間上普遍變化，在磁場(chǎng)逆轉期間廣泛波動(dòng)，有時(shí)降到零高斯強度；也就是：磁場(chǎng)消失不見(jiàn)了！
- The crowd cheered as the teams entered the field. 球隊入場(chǎng)時(shí)觀(guān)眾們?yōu)橹畾g呼。
- On the map the drains of each field are laid sown. 地圖上標有每一塊地的排水溝。
- Right-handed batters usually hit to left field. 右撇子擊球手把球打到左外野。
- The runaway horse was cornered in a field. 那匹跑掉的馬在田地里被圈住了。
- Tent is used by camper and by soldier in the field. 露營(yíng)的人和戰地的士兵用帳篷。
- The children had a field day with their new toys. 孩子們玩新玩具玩得十分開(kāi)心。
- An oil well blew out in the oil field. 油田里有一口油井發(fā)生井噴。
- He is an adventurer in financial field. 他是金融領(lǐng)域的投機者。
- The castle frowned down upon the field. 城堡呈威壓之勢俯視原野。
- The peasants fertilize the field by using manure. 農民們施肥來(lái)使土地肥沃。
