原声例句
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So either a potassium cyanide or sodium cyanide, these are used in synthesis in terms of making carbon-carbon bonds.
因此无论是氰化钾还是氰化钠，都被用来在合成过程中,制造碳碳键。
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So we can have four total hydrogens bonding here, - and we can think about how to describe these carbon- carbon bonds.
我们这里一共有四个氢原子成键，我们可以考虑怎么来-,描述碳碳键。
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But he said the energy of an X-Y bond is going to be equal to the square root.
但他说ＸＹ键的键能,会等于ＸＸ键与ＹＹ键键能乘积的平方根。
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