然而现在，一种新型的钢已经被开发出来，它可以在更低的温度下抵抗断裂，同时保持其强度和韧性，而不需要昂贵的添加剂。

Now, though, a novel type of steel has been developed that resists fractures at much lower temperatures, while retaining its strength and toughness—without the need for expensive additives.

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再加热到适当的温度以达到所需的强度和韧性。

And then heat it to appropriate temperature in order to reach necessary intensity and toughness.

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采用焊接热模拟方法研究了不同温度退火时热影响区韧性的变化。

The use of welding simulation different temperature on the welding HAZ toughness variation has been studied.

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