结果表明，该试验钢的抗塑性变形能力、抗裂纹扩展能力均随温度降低而降低。
The results show that the properties resistance to plastic deformation and crack propagation of the experimental steel both reduce along with temperature drops.
Q-P工艺明显提高了300M钢抗裂纹形成和扩展的能力，延长了材料的均匀塑形变形阶段，推迟缩颈发生。
Q-P process significantly improve crack initiation and propagation resistance of 300M steel, and extend the uniform plastic deformation stage of the material, and finally put off the necking creation.
浮桥的抗弯刚度和受弯变形位移波的传播速度都比一般钢桥或混凝土桥小得多。
The stiffness of the long floating bridge and the propagation velocity of displacement wave are much less than those of the general steel or concrete bridge.
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