An index with many key columns is called a wide index.
具有许多键列的索引称为宽索引。
A wide index is frequently associated with a large key length.
宽索引的键长度通常较大。
The new technique features a good technical economy index, and possesses wide spread value.
新工艺具有良好的技术经济指标和广泛的推广使用价值。
The new technique features a good technical economy index, and possesses wide spread value.
新工艺具有良好的技术经济指标和广泛的推广使用价值。
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