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關(guān)于電氣的英語(yǔ)作文
在日常的學(xué)習(xí)、工作、生活中,大家都不可避免地要接觸到作文吧,作文是一種言語(yǔ)活動(dòng),具有高度的綜合性和創(chuàng)造性。你寫作文時(shí)總是無(wú)從下筆?下面是小編收集整理的關(guān)于電氣的英語(yǔ)作文,歡迎閱讀,希望大家能夠喜歡。
Modern is an era of electricity. People are used to electric lights, radio, television and telephone. It is hard to imagine life without electric lights.
When there is a power failure, people grope in the flickering candlelight, the car hesitates in the street because of no traffic lights, and the food rots in the silent refrigerator. Only two centuries ago, People are just beginning to understand how electricity works. Obviously, nature has been experimenting in this field for millions of years.
Scientists are increasingly discovering that there may be many interesting secrets of electricity in the living world, which can benefit mankind. All living cells send out tiny pulses. When the heart beats, it sends out recording pulses and forms an electrocardiogram.
Doctors can study the electrocardiogram to determine how the heart works. The brain also sends out brain waves. Most living cells generate so little current that sensitive instruments are needed to record them.
But in some animals, some muscle cells have changed When a large number of muscle cells are connected together, they don't function as muscle cells at all. The effect may be surprising. The electric eel is a kind of amazing battery that can send up to 800 Volts of electricity through the water it lives in The impact strength it can transmit is roughly the length of its body.
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