The results showed that the low temperature brittleness and impact strength of PP were improved observably by blend with FU.
结果表明，FU的加入可明显改善PP低温脆性，提高冲击强度。
The study of damage of low temperature brittleness on high manganese steel has been carried out by theoretical analysis and a series of impact tests.
通过理论分析和系列冲击试验，对高锰钢出现的低温脆性损坏进行了分析研究。
The brittleness of high-manganese steel under low temperature is discussed. A method of Iow-temperature cutting with liquid nitrogen freezing of the workpiece has been developed.
论述了高锰钢的低温脆性，建立了用液氮冷冻工件的低温切削方法。
The brittleness of high-manganese steel under low temperature is discussed. A method of Iow-temperature cutting with liquid nitrogen freezing of the workpiece has been developed.
论述了高锰钢的低温脆性，建立了用液氮冷冻工件的低温切削方法。
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