And the classical Courant-Fisher theorem is applied to the complex normal matrix by using a kind of decomposition of complex normal matrices.

利用正规矩阵和乘积可交换矩阵的重要性质 ，给出了亚正定矩阵的三个充分条件以及其合同矩阵的两个分解形式 。

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We talked last time about extracellular matrix and this complex protein-carbohydrate gel that surrounds all cells.

我们上次谈到过的细胞外基质,是一种蛋白和碳水化合物的复合物胶冻,它环绕在细胞周围

耶鲁公开课 - 生物医学工程探索课程节选

Well, it's true that it's not stuck to plastic but it is stuck to other materials The other materials that it's stuck to include other cells that surround it and this complex matrix which surrounds all of the cells in our body called extracellular matrix and I'll get to that in just a few moments.

体内的细胞不会贴在塑料片上,但是它们会和别的材料黏联在一起,这些材料包括,细胞和周围细胞间的黏联,细胞同细胞外基质的黏联,我们身体中包围在细胞周围的物质,称为细胞外基质,后面我会详细讲到

耶鲁公开课 - 生物医学工程探索课程节选

The world runs on an invisible highway of connections, from wires and routers to airports and roads, a complex matrix that sustains everything we do.

FORBES: It's Time To Upgrade The Entire World's Infrastructure

No, dietary habits, environment, genetics, and a myriad other factors come together to form a complex matrix that impacts our weight.

FORBES: Why Soda Ban Will Work In Fight Against Obesity; Food Regulations Have Proven Record