The researchers believe that brief bursts of electrical activity in this area, called "sleep spindles", somehow block external sounds form reaching any parts of the brain that might wake a person up.

这个课题的研究人员们相信，在这个区域内简短的突发性电子活动“睡眠梭形波”，在用某种方式阻挡了外界声音信号传输到大脑中某些能让人醒过来的某些区域。

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Electrical industry, machinery industry — Ferrite block talc, porcelain material, oil bearing, magnetic material and other metallurgical particles.

电器工业、机械工业中的铁氧体块滑石、瓷器材料、含油轴承、电磁材料和其它冶金用的颗粒。

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Fuses, fuse holder, fuse block, little fuse, thermal fuse, electrical fuse, car fuse.

保险丝，保险丝座，保险丝块，小保险丝，热熔断器，电器保险丝，汽车保险丝。

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Other kinds of operations can block the spread of electrical activity in the brain.

VOA: special.2010.10.26

The goal is to block abnormal electrical activity in the heart.

VOA: special.2010.03.02

The device can also respond by sending 10 volt electrical pulses to block the signals' path to the brain, tricking the brain into thinking there is no pain.

ENGADGET: Chip implanted in spinal cord could help sufferers of chronic pain (video)

Finally I figured out how to rip the entire alarm system free of all household electrical wiring, which will probably prompt an expensive service call whenever electricity returns to my block.

FORBES: Hurricane Irene Sparks An Electronic Counterattack

Previously jurors have heard how faulty electrical equipment started the fire in flat number 65 on the ninth floor of the 14 storey block.

BBC: The fire at Lakanal House in Camberwell in July 2009