The stiffness matrix of polyhedron of the flexible joint is formulated based on the local flexibility factor matrix and coordinate transformation.
结果表明，对空间管状结构总体分析，考虑接头的局部柔性是很有必要的。
It has been shown in this paper, that in solving radiation heat transfer problems for finite element model of mechanical construction it is necessary to compute the shape factor matrix.
本文说明了在用有限元模式对机械结构的幅射换热问题进行求解时，必须计算形状因子矩阵。
Recent studies have suggested that vascular endothelial growth factor, matrix metalloproteinase-2 and-8 play important roles in the instability of atherosclerotic plaques.
近年来的研究表明，血管内皮生长因子、基质金属蛋白酶- 2和基质金属蛋白酶- 8在动脉粥样硬化斑块不稳定中起着重要作用。
Recent studies have suggested that vascular endothelial growth factor, matrix metalloproteinase-2 and-8 play important roles in the instability of atherosclerotic plaques.
近年来的研究表明，血管内皮生长因子、基质金属蛋白酶- 2和基质金属蛋白酶- 8在动脉粥样硬化斑块不稳定中起着重要作用。
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