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Keep in mind that, as is the case with matrices, quaternion multiplication is not commutative!

紧记,矩阵在此种情况下,四元数的乘法是不可进行交换的。

You might also know (or remember from your math lessons) that matrix multiplication is not commutative.

你可能也知道的矩阵乘法是不可交换的。

Validating experiment was carried out on IKONOS2 images, and showed that resultant regression coefficients were more acceptable for their physical meanings, and that the discribed method performed comparable with spectral response function or least squares based methods.

通过IKONOS-2全色与多光谱图像的融合实验,结果表明:该方法所求得的回归系数具有明确物理意义,符合实际情况,并且与光谱响应函数法、最小二乘法相比,其融合质量基本保持一致,并且由于该方法不需要先验知识,故其实用性较强。

Using bi-imaginary number representation, complex multiplication is simplified into two multiplication, instead of four ones in the previous method.

为克服空间带宽积的限制,提出了利用有限的外积乘法单元,通过矩阵分块和矢量循环流动进行任意维数矩阵与矢量运算算法,处理器利用率高。

It is compact in structure, stable and efficient for practical uses with high package density. 7. Based on negative binary coding method, a modified two-dimensional crossed-ring interconnection network and four subarrays outproduct technique, an optoelectronic parallel martix-vector complex multiplication processor is presented.

借助负二进制数字表达、空间编码加权-移位四区域复数外积乘法技术和改进的矩阵-矢量啮合算法,研制了光电混合并行处理的矩阵-矢量乘法器。

And the calculation of crystallite size derived from Debye-Scherrer s equation is carried out in terms of Least Square Method by self-written VB program.

然后在Debye-Scherrer方程的基础上运用最小二乘法对晶粒大小进行计算,这一过程由自编的VB程序完成。

Another important research work is the software design. We use the least square method in the software to demarcate the systematic error.

此外通过设计并使用了基于最小二乘法理论的软件标定程序,我们对系统误差进行了矫正,提高了系统的测量精度和准确性。

Applying the reaction route that methanol direct reforming and methanol decomposition carry out parallel, the kinetic model with power function type was established for Samp-10 catalyst in SRM, and the parameters of the model were also computed by the least twain multiply method.

以Samp-10催化剂为例,采用甲醇直接重整和甲醇分解平行进行的反应途径,建立了适合其在SRM制氢反应中使用的幂函数型动力学模型,并利用最小二乘法确定了模型参数,得到了其速率方程表达式。

It includes an optimized curve fitting algorithm based on the least-squares method and a surface lofting algorithm in which a interpolation function is employed to provide a continuous variation of the parameter in one direction over the entire lofted surface.

基于最小二乘法,对截面数据进行均方误差下的精确优化拟合;在曲面蒙面算法中,采用插值函数确定蒙面曲面一个方向的参数。

Aim In order to prove a semiring whose additive reduct is a semilattice and multiplicative reduct is a inverse semigroup to be a distributive lattice.

摘要目的求证加法导出是半格、乘法导出是逆半群的半环成为分配格的充要条件。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力