亚硝酸化合物的前体——硝酸盐和亚硝酸盐正是这类物质的典型代表。

The typical examples of the predecessors of N-nitro compounds were nitrate and nitrite.

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亚硝酸化合物的前体——硝酸盐和亚硝酸盐正是这类物质的典型代表。

The typical examples of the predecessors of N-nitro compounds were nitrate and nitrite.

youdao