音标：[daɪ'prəʊtɒn] ；

n. [核] 双质子

字源大挪移 Prefix - 表示数字的字首 43 di-,dicho-

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

发表于:2018-12-04 / 阅读(157) / 评论(0)

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As they grow bigger and bigger, 随着体积越来越大 they start to spin and throw out a disk of debris 它们开始旋转，甩出的碎屑形成盘状 that will coalesce to form a solar system. 在日后融合形成太阳系 This kind of process

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So if you popped open the blueberry and were searching for the nucleus 如果你在蓝莓的内部搜索原子核，结果是一无所获。 You know what? It would be invisible. It's too small to see! 知道为什么吗？因为我们看不到它！它

发表于:2018-12-08 / 阅读(104) / 评论(0)

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You probably already know everything is made up of little tiny things called atoms 你也许已经知道所有的东西都是由微小的原子组成。 You might even know that each atom is made up of even smaller particles called protons, neutrons

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发表于:2018-12-08 / 阅读(103) / 评论(0)

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发表于:2018-12-30 / 阅读(143) / 评论(0)

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Part I Lost in the cosmos 第一章如何营造一个宇宙 They're all in the same plane.They're all going around in the same direction. . . . 它们都处于同一平面。它们都在沿同一方向转动...... It's perfect,you know. It's gorgeo

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From Sunday, smoking is banned in Beijing's taxis. The Green Taxi campaign is part of the city's efforts to ensure a smoke-free Olympic Games next year. No smoking signs will be put up in all of Beijing's 66,000 taxis. Drivers who are caught smoki

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The calculations focus on a strange quality of all matter. It's one that defies common sense. But it's fundamental to the work of Astrophysicists like professor Douglas Leonard. Solidity is an illusion. If I run up with my fist and punch a burg wall,

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The structure of atoms and the significance of protons will come in a following chapter, so for the moment all that is necessary is to appreciate the organizing principle: hydrogen has just one proton, and so it has an atomic number of one and comes

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发表于:2019-01-30 / 阅读(151) / 评论(0)

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To explain what kept atoms together, other forces were needed, and in the 1930s two were discovered: the strong nuclear force and weak nuclear force. The strong force binds atoms together; its what allows protons to bed down together in the nucleus.

发表于:2019-02-17 / 阅读(94) / 评论(0)

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Do you appreciate the small things in life? In physics, infinitely small things are problematic. If a structure can be infinitely divided into smaller parts, can there be such a thing as a smallest possible space or does this division go on eternally

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Let us pause for a moment and consider the structure of the atom as we know it now. Every atom is made from three kinds of elementary particles: protons, which have a positive electrical charge; electrons, which have a negative electrical charge; and

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