趣英语 / “预拉”造句

“预拉”造句

预先装配的平行钢丝索与结构钢缆相比, 不需要预拉.
Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching.

分析了7075-T651合金厚板预拉伸断裂的原因.
The crack causes for pre - stretching plates of 7075 T 651 alloy are analysed.

研究了时效前的预拉伸对耐热Al -5.3Cu-0.8Mg-0.3Ag 合金时效过程和拉伸性能影响.
The effect of prestretching on age ? hardening and tensile properties of Al ? 5.3 Cu ? 0.8 Mg? 0.3 Ag alloy was investigated.

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