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- The core of the earth is made up of a liquid outer core and a solid inner core. 地核是由一个液体的外核和一个固体的内核组成的。
- The Earth's core consists of a fluid outer core and a solid inner core. 地核由液态的外核和固态的内核组成。
- Evidence indicates that the outer core is about twice as dense as the material in the mantle. 有证据表明,外地核的密度约为地幔物质的两倍。
- Indeed, it may be that such fluctuations are simply extreme examples of the continuum of fluctuations in the dynamo processes, an El Niflo in the weather of the outer core. 当然,其原因可能是如此大的波动只不过是发电机过程中波动连续体的极端例子,一个外核气候中的厄尔尼诺现象。
- The outer core of the Earth, about two-thirds of the way to the center, is molten iron. 地球的地核外部,大致到达中心三分之二的地方是熔化的铁。
- 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. 这样,不经常发生的磁场倒转,很可能是由外核流体或磁场曲线通过扩散宛然进人流体方式发生较大的变化而引起的。
- The variation must in a swimming pool will soon diffuse throughout the pool, a Concentration of magnetic field lines diffuses throughout the planet's outer core. 与游泳池中一滴有色的染料在池中迅速扩散的方式一样,一个浓缩的地磁场曲线的扩散遍布地球的外核。
- The largest part of takes Place because magnetic field lines are trapped in good electrical conductors such as the molten iron of the Earth's outer core. 发生磁场的再生是因为磁场曲线被限制在良好的电导体内,如地球外核的熔融铁。
- Indeed,it may be that such fluctuations are simply extreme examples of the continuum of fluctuations in the dynamo processes,an El Niflo in the weather of the outer core. 当然,其原因可能是如此大的波动只不过是发电机过程中波动连续体的极端例子,一个外核气候中的厄尔尼诺现象。
- The variation must in a swimming pool will soon diffuse throughout the pool,a Concentration of magnetic field lines diffuses throughout the planet's outer core. 与游泳池中一滴有色的染料在池中迅速扩散的方式一样,一个浓缩的地磁场曲线的扩散遍布地球的外核。
- 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. 这样,不经常发生的磁场倒转,很可能是由外核流体或磁场曲线通过扩散宛然进人流体方式发生较大的变化而引起的。
- Its a consensus that the flow of liquid iron in the outer core generates the Earths magnetic field.One of the key factors that control the flow is shear viscosity. 地球外核液态铁的不断流动造成了地球磁场,决定这一流动的基本性质之一是剪切粘滞度。
- Fluid motions try to reverse the field on a few thousand years timescale,but the solid inner core tries to prevent reversals because the field cannot change (diffuse) within the inner core as quickly as in the fluid,outer core. 尽管流体运动会在几千年的时间尺度上使磁场倒转,但因为磁场的变化(扩散)在内核里不能与在外核的流体中一样快,所以固体的内核会尽力阻止倒转。
- Raising the stability of outer core barrel is the main approach to extend the life of core bit and to raise core recovery and the footage of single core barrel. The outer core barrel with centralizer is an effective method to raise its stability. 提高外筒稳定性是延长取心钻头寿命、提高岩心收获率及单简进尺的最主要途径,而外筒加扶正器是提高其稳定性的有效方法。
- For this information, it can be induced that the rotative velocity of the liguid outer core presents similar nonuniformity, and the nonuniform rotation will have an effect on crust plate movement. 据此,作者推测液态外地核的自转,也存在类似的不均匀性,而这种不均匀自转将对地壳板块运动产生影响。
- The central portion of Earth below the mantle, beginning at a depth of about2, 900 kilometers(1, 800 miles) and probably consisting of iron and nickel. It is made up of a liquid outer core and a solid inner core. 地核地球的中心部分,地幔以下,开始于深为2,900公里(1,800英里)的地方,大概含有铁和镍。它由一个液体的外核和一个固体的内核组成
- Fluid motions try to reverse the field on a few thousand years timescale, but the solid inner core tries to prevent reversals because the field cannot change (diffuse) within the inner core as quickly as in the fluid, outer core. 尽管流体运动会在几千年的时间尺度上使磁场倒转,但因为磁场的变化(扩散)在内核里不能与在外核的流体中一样快,所以固体的内核会尽力阻止倒转。
- Understanding of the outer cores bulk viscosity will help us to infer the anelastic properties of the inner Earth. 研究外核液态铁的体粘滞度对认识地球内部非弹性性质具有重要意义。
- The hard core in the party make all the decisions. 这个党的核心成员决定一切。
- Dust the repair to prevent adhesion to outer cover. 清整修补处以防与外胎粘连。