... 二次变分 quadratic variation 二次变换 quadratic transformation 二次不等式 quadratic inequality ...
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提出一种适合作为二次变换元件使用的通用型应变传感预制结构——光纤光栅应变片。
A new general prefabricated strain sensor called FBG strain gauge is designed, which can be used as a quadratic transform component.
二次型化标准形常采用配方法，而二次型化标准形等价于它的矩阵合同对角化，文中利用初等矩阵和初等变换之间的关系。
Method of completing square is often used when transforming a quadratic form into a normal one, whose process is equivalent to making the relevant matrix contract diagonal.
水印信息经随机置换与LDPC编码，对经过二次整数变换之后的直流分量进行修改实现水印的嵌入。
The watermarking information that is stochastically permuted and coded by LDPC is embedded in the modified DC components which are attained by integer transform twice.
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