It is a key technique to weight the index in information retrieval.
如何对索引词加权是信息检索中的一个关键技术。
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。
Basic formulation, main technique index and sand control mechanism for agglutination sand are introduced.
介绍了胶合砂的基本配方、主要技术指标及防砂机理。
Basic formulation, main technique index and sand control mechanism for agglutination sand are introduced.
介绍了胶合砂的基本配方、主要技术指标及防砂机理。
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