The algorithm of matrix inversion with matrix exterior product arithmetic is improved, so that matrix inversion is avoided.

设计了基于矩阵外积法的一步预测均方误差阵的改进算法。

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The first chapter is about vector algebra, introduces the vector of linear operations, inner product of vectors, vector outer product, vector product and double mixed exterior product.

第一章是向量代数，主要介绍向量的线性运算、向量的内积、向量的外积、向量的混合积和双重外积。

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Product exterior level off, smooth, high volume density, good thermal conductivity, excellent energy saving effect.

制品外观平整、光滑、体积密度高，具有良好的导热性，节能效果优异。

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While P2i describes its invisible "hydrophobic layer" as covering the exterior and interior of a product, HzO touts what it calls "WaterBlock" technology, which is applied to the internal circuitry of a device to protect it from moisture.

CNN: Waterproof phones and tablets make a splash

The exterior, interior, and performance all need to mesh with and reinforce the overall message the product is conveying.

FORBES: Dispelling The Notion That All Cars Need To Be Stylish and Sporty To Succeed