( μ xx μ xy μ xz μ _ _ = μ yx μ yy μ yz μ zx μ zy μ zz ) MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHXgaruavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaamaabmaabaqbaeqabmWaaaqaaiaaykW7caaMc8UaaGPaVlaaykW7caaMc8UaaGPaVlaaykW7caaMc8UaaGPaVlabeY7aTnaaBaaaleaacaqG4bGaaeiEaaqabaaakeaacqaH8oqBdaWgaaWcbaGaaeiEaiaabMhaaeqaaaGcbaGaeqiVd02aaSbaaSqaaiaabIhacaqG6baabeaaaOqaaGWaciqb=X7aTzaaDyaaDaacdaGae4xpa0JaaGPaVlaaykW7cqaH8oqBdaWgaaWcbaGaaeyEaiaabIhaaeqaaaGcbaGaeqiVd02aaSbaaSqaaiaabMhacaqG5baabeaaaOqaaiabeY7aTnaaBaaaleaacaqG5bGaaeOEaaqabaaakeaacaaMc8UaaGPaVlaaykW7caaMc8UaaGPaVlaaykW7caaMc8UaaGPaVlaaykW7cqaH8oqBdaWgaaWcbaGaaeOEaiaabIhaaeqaaaGcbaGaeqiVd02aaSbaaSqaaiaabQhacaqG5baabeaaaOqaaiabeY7aTnaaBaaaleaacaqG6bGaaeOEaaqabaaaaaGccaGLOaGaayzkaaaaaa@7BDC@