To characterize relative orientation between the loading direction and material fabric, an anisotropic variable expressed by the joint invariants of the stress tensor and fabric tensor is introduced.
为了描述材料的各向异性，引入了一个由应力张量和组构张量的联合不变量表达的各向异性参数。
2
The effects of grey yarn pre-orientation degree, drawing temperature and drawing speed on the strength variable coefficient of polyester staple fiber are studied.
探讨了原丝预取向度、 拉伸温度以及拉伸速度对涤纶短纤维强度变异系数的影响。
3
The empirical results show that the experience cognitive as an independent variable affects entrepreneurial decisionmaking through the factors of risk perception, risk orientation, effectuation.