以下为句子列表：
英文: Abstract: We conduct a theoretical study on the properties of a bound polaron in a quantum well under an electric field using linear combination operator and unitary transformation methods,which are valid in the whole range of electron-LO phonon coupling.
中文: 文摘:采用线性组合算符及幺正变换方法研究了电场对量子阱弱耦合束缚极化子的性质的影响.推导出量子阱中束缚极化子的基态能量和库仑束缚势、电场和阱宽的变化关系.数值计算结果表明,基态能量因电场和库仑束缚势的不同而不同,随电场和库仑束缚势的增大而增大,随阱宽的增大而迅速减小.
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英文: As far as the general mixed-linear model is concerned, this paper explores the two-staged prediction of the linear combination about the fixed effects, and the random effects and meanwhile an approximate computation formula is derived for the mean square
中文: 摘要对一般的线性混合模型，研究其固定效应与随机效应线性组合的两步预测问题，给出了两步预测均方误差的一个近似计算公式，为比较不同方差分量估计的优劣性进一步奠定了基础。
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英文: By using the modified mapping method and the extended mapping method, we derive some new exact solutions of the higher order nonlinear schr?dinger equation, which are the linear combination of two different Jacobi elliptic functions.
中文: 摘要通过修正的映射方法和推广的映射方法，我们得到了高阶非线性薛定谔方程新的精确解，它们是两个不同的雅可比椭圆函数的线性组合。
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英文: I see this as a linear combination of a column.
中文: 我把它看成是一个列向量的一个线性组合。
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英文: In the maximum entropy approach, the optimal translation is searched according to a linear combination of a series of real-valued feature functions.
中文: 而基于最大熵的方法则是利用一系列实数值特徵函数的线性组合来求解最优的译文。
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