The fact that sunspots are magnetic fields accounts for their dark appearance.
太阳黑子是磁场的事实解释了它们的黑色外观。
That's because magnetic fields reduce the pressure exerted on the gases inside of them, making the spots cooler than the rest of the Sun's surface.
这是因为磁场降低了施加在内部气体上的压力，使得太阳黑子比太阳表面的其他部分温度更低。
Sharks are among the wide array of animals that can sense magnetic fields.
鲨鱼是大批能够感知磁场的动物中的一员。
Both craft recorded the density of particles and the strength of the magnetic fields.
两个探测器都记录了粒子密度和磁场强度。
Of course, I mean, you actually have to take some power supply to maintain the magnetic fields.
当然，实际上你必须有电源供应，用以维持磁场。
On top of that weirdness, magnetars have the added quirk of possessing extremely strong magnetic fields.
最奇怪的是，磁星竟然拥有极强的磁场。
Thus the carcinogenicity of static magnetic fields to humans is not at present classifiable (IARC, 2002).
因此，静电磁场对人类的致癌性目前尚无法进行分类(IARC, 2002年)。
Stars are spinning balls of roiling, electrically charged gas, and thus typically generate magnetic fields.
恒星是旋转着的带电气态球体，所以会产生磁场。
Specifically, monopoles could exit at the ends of long tubes carrying magnetic fields called "Dirac strings.
特别地，磁单极子可以存在于称为“Dirac弦”的，也就是携带磁场的长管的两端。
A second technique relies on magnetic fields. It is still at an experimental stage and works using resonance.
第二类技术以磁场为依托，利用共振原理，目前仍处于研究阶段。
Focusing magnetic fields on the visual cortex of the brain caused the subjects to see luminous discs and lines.
当把磁场聚焦在大脑的的视觉皮质上时，会促使受试者看见明亮的圆盘和线条。
But now scientists have proved that human really do have a sixth sense - that lets them detect magnetic fields.
但现在科学家已证实人类确实有第六感，正是这第六感让人类能够感应到磁场。
My 12 year old had a lesson in his science course later that day that mapped magnetic fields of a little bar magnet.
当天的晚些时候，我12岁的大儿子在他的自然科学课上绘制了一幅磁铁的磁场分布图。
Currents create magnetic fields, leading to a third variable, magnetic flux, which characterises the field's strength.
电流产生了磁场，导致第三个变量的产生-磁通量，它表示磁场的强弱。
The machine's magnetic fields are powerful enough to induce electric currents in human brain cells without being harmful.
此种器械产生磁场的功率足以在人的大脑细胞里激发出电流而不会使人体有所损害。
Manufactured magnets are basically the same thing except that we use induced magnetic fields to line up the iron particles.
制造磁铁的情况基本相同，除了我们会利用磁场来排列铁粒子之外。
Researchers in Spain have developed an 'antimagnet' cloak that could hide objects from magnetic fields, reports ScienceNOW.
ScienceNOW报道称，西班牙的研究人员已开发出一种能够在磁场中隐藏物体的‘抗磁体’斗篷。
These magnets will generate local magnetic fields that point in opposite directions at different points on the chip's surface.
这些磁铁可产生局部磁场，从相反的方向作用于芯片表面不同位点。
One of the benefits of this technique is that it allows for a relatively rapid detection of tiny electric and magnetic fields.
该技术带来的一项好处是可以相对快速地检测到微弱的电场和磁场。
The findings showed that turtles can distinguish between the magnetic fields that characterize different geographic locations.
这些发现表明，海龟能够辨别不同地区的磁场。
Requiring temperatures of more than 100 million degrees Celsius, the fusion reactions have to be contained in magnetic fields.
聚变反应必须控制在磁场内，需要一亿摄氏度的温度。
Astronomers might want to focus more on older, less active stars or search for planets with their own magnetic fields, she says.
天文学家可能想更多地关注更古老的、又不太活跃的星体或者寻找拥有它们自己磁场的行星，她说。
Whipped into gigantic swirls by the Sun's ferocious magnetic fields, the shell of super-hot gas is as beautiful as it is dangerous.
太阳暴烈的磁场搅动出了巨大的涡流，极热气体的外表美艳若花，却又危险至极。
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。
Like a boat trying to cut through the ocean waves, the induced magnetic fields pile up where the solar wind meets Venus's ionosphere.
就像试图穿越海浪的船，诱发的磁场积蓄在太阳风与金星的电离层的交汇处。
Recent technological innovations have led to the use of magnetic fields up to 100 000 times stronger than the Earth’s magnetic field.
最近的技术创新导致使用比地球电磁场强10万倍的磁场。
Electric and magnetic fields are generated by phenomena such as the Earth's magnetic field, thunderstorms, and the use of electricity.
电和磁场系由诸如地球磁场、雷暴和使用电等现象产生。
Electric and magnetic fields are generated by phenomena such as the Earth's magnetic field, thunderstorms, and the use of electricity.
电和磁场系由诸如地球磁场、雷暴和使用电等现象产生。
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