分析了影响管式加热炉热效率的因素，主要包括过剩空气系数、不完全燃烧、排烟温度等。
Influencing factors on heat efficiency of tubular heaters are analyzed, which mainly include excess air factor, imperfect combustion and exhaust temperature.
在关系数据库系统的实现中，对不完全信息的处理通常采用三值逻辑。
When a relational database system is implemented, three-valued logic is usually adopted to handle incomplete information.
结果表明：我国人民币汇率对国内农产品价格的影响表现为不完全传递，传递系数为0.61。
The results showed that the RMB exchange rate had an incomplete pass-through to domestic agricultural prices, and the pass-through coefficient was 0.61.
为了能够表示和处理关系数据库中这种混合类不完全信息，文中最后给出了一种简化的扩展关系模型。
In order to express and process mixed-type incomplete information in relational database, a - simplified expanded relational model is given.
其次，参考含有空值的关系数据库的理论，将不完全信息的概念引入到XML文档。
Next, referring to the theory of relational database with incomplete information, the concept of incomplete information is brought in XML document.
为了实现不完全信息的处理，以关系数据库中空值的完全语义为基础，阐述空值的存在对数据库操作的影响，并给出几种处理空值的方法。
Based on the semantics of null values in relational database, the article analyzes the affection of null values when we operate the database.
建立不完全数据回归方程，给出回归系数的最佳无偏整体估计及其协方差矩阵。
The regression equation for incomplete data is established, and the best unbiased integral estimators of the regression parameters and their covariance matrix are also given.
建立不完全数据回归方程，给出回归系数的最佳无偏整体估计及其协方差矩阵。
The regression equation for incomplete data is established, and the best unbiased integral estimators of the regression parameters and their covariance matrix are also given.
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