Nearly no data exist regarding rates and predictors of radiographic spinal progression in early axial spondyloarthritis (SpA).
近期还没有针对早期中轴型脊柱关节病患者的脊柱放射学进展比例及预测因子的数据。
The impact on the query in this last case is extremely important because, even though no data is lost from one document to the other, the qualification of the data does not exist anymore.
后一种情况对查询的影响极其重要，因为即使没有数据损失，数据的限定也没有了。
When null, the data point takes up no space just as if the column didn’t exist.
当值为null时，数据指针就完全不占用空间，就像这个列不存在一样。
Statistical analysis of experimental data on mixing properties showed that no systematic error exist among the sets of data.
本文还对试验数据进行了数学统计分析证明试验数据组间不存在系统误差。
Statistical analysis of experimental data on mixing properties showed that no systematic error exist among the sets of data.
本文还对试验数据进行了数学统计分析证明试验数据组间不存在系统误差。
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