显然，试图解释和预测磁场变化的地球物理学家必须了解外核发生了什么。
Clearly, geophysicists who seek to explain and forecast changes in the field must understand what happens in the outer core.
1832年，也就是迈克尔·法拉第发现磁场变化会产生电场的那一年，一位年轻的法国工程师为一种新的、效率更高的水车申请了专利。
In 1832, the year of Michael Faraday's discovery that a changing magnetic field produces an electric field, a young French engineer patented a new and more efficient waterwheel.
传感器成功探测到心跳所伴随的微弱而规则的磁场变化。
The sensor successfully detected the weak but regular magnetic pattern of the heartbeat.
由此导出了半波电压随外界磁场变化的数学模型。
The maths model about the variance that the half-wave voltage varies with the magnetic induction outside is set up.
研究结果表明对数行为没有随交替磁场变化而变化。
It is found that the logarithmic behavior does not vary with the variation of the field.
地球物理学家很早就知道，地球磁场变化的原因深藏于地球中心。
Geophysicists have long known that the source of the fluctuating magnetic field lies deep in the center of the earth.
它具有激光功率，脉宽以及外磁场变化范围大的特点。
The laser power, pulse width and extra magneto-field can be varied in a wide range.
磁电阻效应是指材料的电阻随外加磁场变化而变化的现象。
Changing of material resistance with applied magnetic field intensity is called Giant magnetoresistance (GMR).
扫描仪上的线圈探测到这些磁场变化，并以此构建出患者受检部位的图谱。
The coils in the scanning apparatus detect these magnetic changes, which are used to build up a map of the part of the body being examined.
磁法勘探是观测研究地下介质磁场变化的一种地球物理勘探方法。
Magnetic exploration is a geophysical method on magnetic change observed in the underground medium.
而鸽子对较小的磁场变化是如何探测出来并进行处理，至今尚无人知晓。
No one yet knows how the pigeons are equipped to detect and deal with smaller variations in the field.
他们还发现地球磁场变化的幅度取决于从海水表面一路下降到海底的温度变化。
They also observe that the magnitude of such changes depends on the water's temperature all the way down to the ocean floor.
DSI传感器内部结构采用类似于霍尔效应的原理，测量齿轮旋转引发的磁场变化。
Internally the DSI sensors use analogue Hall Effect elements, which measure the change of magnetic field that is created by the gear rotation.
描述了非晶态合金材料的电磁感应效应并推出反映被测磁场变化的输出电压关系式。
The electromagnetic influence effect of material for amorphous alloy and expression on various magnetic field is presented.
沃尔·卡巴什人最多可以在方圆25米内，通过塑造磁场和关注磁场变化来进行互相间的交流。
By shaping and focusing this field, Cabasshites communicate with each other at a range of up to 25 meters.
所述单片开关(50)具有利用电阻变化、电容变化或磁场变化来感测开关的致动的层(120)。
The monolithic switch (50) has a layer (120) for sensing switch actuation by means including resistance change, capacitance change, or magnetic field change.
也许它们感受磁场变化速度的细微变化，就像登山旅行者参照地形图上密密麻麻的线段以辨别一个与众不同的峡谷。
Maybe they sense slight variations in the rate of change in the magnetic field, much like a hiker reads tightly spaced lines on a topographic map to discern a distinctive canyon.
水平式隧穿磁强计是一种新型隧穿磁强计，其特点是反映磁场变化的洛伦兹力与敏感元件在同一水平面内。
Horizontal tunneling magnetometer is a new kind of tunneling magnetometer in which Lorentz force is in the same level of sensitive element.
由于磁场变化对普通金属只会造成远远不到百份之一的电阻变化，这种现象被称为“巨磁电阻”或巨磁阻gmr。
Since a magnetic field changes the resistance of ordinary metals by only a fraction of a percent, they dubbed this phenomenon "giant magnetoresistance," or GMR.
由于磁场变化对普通金属只会造成远远不到百份之一的电阻变化，这种现象被称为“巨磁电阻”或巨磁阻GMR。
Since a magnetic field changes the resistance of ordinary metals by only a fraction of a percent, they dubbed this phenomenon "giant magnetoresistance, " or GMR.
目的研究电磁场变化率对血液粘度和凝血过程的影响，探索降低血液粘度，抑制凝血过快、过强的一种物理新方法。
AIM to study the effects of change rate of electromagnetic fields (EMF) on blood apparent viscosity and coagulation and find a new physical way to reduce the blood viscosity and restrain coagulation.
他们还用各种各样的仪器和方法，通过测量地震前发生的地球物理上的变化，如地表倾斜度和活性断层附近的磁场变化，对地震进行预测。
These instruments measure tilts int the ground's surface, as well as changes in the magnetic field near active faults . Usually these changes precede the occurrence of some earthquakes.
以经爆破试验的四件小钢管件裂纹为研究对象，找出裂纹宽度与磁记忆信号的关系，得出漏磁场变化梯度的最大值随裂缝宽度增加而增加。
Through the examination experiment on four tube pieces crack part, the relation of crack width, the maximum of leaking magnetic field and differential coefficient K is found out.
不过这可能还需要一段时间，因为他目前正在为2010年展会的项目而忙碌，这次他要设计一个可以通过测量电磁场变化来搜索地下河的装置。
That will have to wait, though, because he's busy working on his 2010 science fair project - a device that finds underground rivers by measuring their electromagnetic currents.
根据极地轨道地磁场变化的特性，利用卫星的姿态角和姿态角速率作为反馈信号，提出了一种采用磁力矩器的比例微分(PD)控制规律设计方法。
Taking into account properties of the geomagnetic field, a new PD magnetic control law using the feedback information of attitude Angle and attitude rate is developed.
地磁活动是地球磁场的自然变化，其波动周期为11年。
Geomagnetic activity, the natural variations in Earth's magnetic field, it fluctuates in 11-year cycles.
地球磁场不同的变化会造成它们不同的自旋方式，每种方式都会让罗盘的化学状态表现出细微的差异。
Variations in Earth’s magnetic field cause them to spin in different ways, each of which leaves the compass in a slightly different chemical state.
当孩子的大脑回应每种声音时，脑磁图描记术机器中的非侵入性探测器就会分析大脑中变化的磁场。
As the child's brain responds to each sound, non-invasive detectors in the MEG machine analyse the brain's changing magnetic fields.
当孩子的大脑回应每种声音时，脑磁图描记术机器中的非侵入性探测器就会分析大脑中变化的磁场。
As the child's brain responds to each sound, non-invasive detectors in the MEG machine analyse the brain's changing magnetic fields.
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