其中以加成反应最为关键，它不仅是最慢的过程，其收率的多少也决定了目的产品三氯吡啶醇钠含量的高低，是整个过程的关键步骤。
Among the three steps, Addition reaction is the crucial step in that it is not only the slowest process but also how much its yield decides stand or fall of content of trichloropyridinol sodium.
其中以加成反应最为关键，它不仅是最慢的过程，其收率的多少也决定了目的产品三氯吡啶醇钠含量的高低，是整个过程的关键步骤。
Among the three steps, Addition reaction is the crucial step in that it is not only the slowest process but also how much its yield decides stand or fall of content of trichloropyridinol sodium.
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