In essence, the OPEN positions into the index and the FETCH first will retrieve the first row based on the RRN provided by the index.

本质上，OPEN定位到索引中，FETCH FIRST将基于索引提供的rrn检索第一行。

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The degradation states of Acid Complex Black t and Mordant Blue RRN were studied in this paper with glucose as cometabolism substrate.

研究在葡萄糖作为共代谢基质时酸性媒介黑t，派拉丁兰rrn的降解情况。

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