... resistant strength of materials 材料抗震强度设计值 Strength of Engineering Materials 材料强度学 Stress and Strength of Materials 材料应力及强度 ...
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The orientations of polyurethanes resulted in a large number of the residual orientation , the stress softing and stress hysteresis , the permanent set , the higher modulus and strength of materials .
取向的结果，导致大量的硬段残留取向、应力软化、应力滞后和高变形，以及材料的高模量和高强度。
A considerable amount of theoretical and experimental research on strength theory of materials under complex stress state was done in the 20th Century.
在20世纪，关于材料在复杂应力状态下的强度理论进行了大量的理论研究和实验研究工作。
The distribution of internal stress has large influence on mechanical properties of materials such ay strength and fracture toughness.
内应力的分布，对材料宏观力学性能如强度和断裂韧性，都将产生较大的影响。
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