null space
零空间：线性代数中的一个概念
常用释义
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基本释义
- 零空间：线性代数中的一个概念，指的是线性变换中映射到零向量的向量空间。
例句
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1·First, by redefining the within class scatter matrix and the between class scatter matrix, a new null space method was presented.首先，通过重新定义样本的类内散布矩阵和类间散布矩阵，提出了一种新的零空间法。
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2·The system was converted to the block controllable form consisting of two parts, one was the range space subsystem and the other was the stable null space subsystem.通过状态变换和去耦合处理将系统转换为块能控标准型，它由值域空间子系统和稳定的零空间子系统组成。
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3·It transforms the double-differential carrier observation equation using null space transformation so that it need not to resolve real-time three-dimensional position parameters.对单个历元的双差载波相位观测方程进行零空间变换，避免了实时变化的三维位置参数求解；
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4·The optimal feature vectors are extracted from the null space of intrapersonal locality preserving difference scatter matrix, which avoids the singularity and the SSS problem is solved.通过在个体类内保局差异散度矩阵的零空间中求最优特征向量，避免了矩阵的奇异性问题，解决了小样本问题。
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5·This can lead into additional space savings, if the table contains many NULL values.如果表中包含很多null值，这样可以节省更多的空间。
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6·In addition, if you have a table with many columns that aren't typically used, you are also wasting disk space with NULL value fields.此外，如果您有不常用的含多个列的一个表，您也在通过null值字段浪费磁盘空间。
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7·Enter a space if you want a value to be null.如果您想要一个值为空，可以输入一个空格。
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8·Beam pattern null in the direction of the jamming is formed by a space filtering and assisted receive channels to suppress the jamming.它是采用空间滤波技术，通过辅助通道在干扰方向上形成波束图的零点来实现对干扰信号的抑制。
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9·Beam pattern null in the direction of jamming is formed by space filtering and assisted receive channels to suppress the jamming.它采用空间滤波技术，通过辅助接收通道在干扰方向形成波束图的零点，实现对干扰信号的抑制。
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10·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。