名词
中文翻译：环状缩合
同义词：
['cyclization', 'cyclization例句：1. The process of spiroannulation is crucial for the formation of carbon rings in organic chemistry.（在有机化学中，环缩合过程对于形成碳环至关重要。）']
例句：
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1. The process of spiroannulation is crucial for the formation of carbon rings in organic chemistry.
在有机化学中，环缩合过程对于形成碳环至关重要。
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2. During the spiroannulation reaction, the double bond is converted into a single bond.
在环缩合反应中，双键被转化为单键。
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3. The spiroannulation method is used to synthesize complex molecules with unique properties.
环缩合方法用于合成具有独特性质的复杂分子。