本级具有良好的流动和改善环境和低温韧性。

This grade has excellent flow and improved ambient and low temperature toughness.

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良好的低温韧性。

Good low temperature toughness.

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高冲击强度和良好的低温柔韧性。

High impact strength and good low temperature flexibility.

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这种钢的强度高、韧性极低温度；

This steel excels in high strength, extremely low temperature toughness;

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这种钢的强度高、韧性极低温度；

This steel excels in high strength, extremely low temperature toughness;

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