分析表明，冰致平台自激振动发生在冰的韧脆转变的冰速范围内。
Previous studies have demonstrated that self-excited vibration occurred during the ice speed at which ice fails in ductile-to-brittle transition (DBT) range.
为了明确自激振动的产生机理，建立力学模型，必须研究韧脆转变机制。
In order to further investigate the mechanism and build model of self-excited vibration, it is necessary to study the mechanism of DBT.
研究了磷含量和晶粒尺寸对低碳钢的屈服强度、 冲击韧性和韧脆转变温度的影响。
The influence of phosphorus and grain size on yield strength and Charp V-notch toughness of low carbon steels have been investigated.
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