求翻译：1　找出最长的碳链当主链，依碳数命名主链，前十个以天干(甲、乙、丙...)代表碳数，碳数多于十个时，以中文数字命名，如：十一烷。 　是什么意思？

1 Locate the longest carbon chain as the main chain, named by the main chain carbon number, with the first ten Heavenly Stems (A, B, C ...) represents the number of carbon, carbon number more than ten, the number of names in Chinese, such as: undecane.

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1 identify the longest carbon chain when the main chain, depending on carbon number named the main chain, the top ten heavenly stems (a, b, c ...) 　Representative carbon number, when there are more than ten carbon, named after the Chinese figures, such as n-11.

1 Locate the longest carbon chain as the main chain, named by the main chain carbon number, with the first ten Heavenly Stems (A, B, C ...) represents the number of carbon, carbon number more than ten, the number of names in Chinese, such as: undecane.