低温脆性

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。

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The failure pattern in fracture test at low temperature was a brittle fracture.

在低温断裂试验中管道的失效模式是脆性断裂。

Some kinds of ten used tests of low temperature properties and their use methods were mainly introduced, including test of fragileness temperature' TR test and Gehman test.

主要介绍了常用的几种低温性能试验及如何使用，其中包括脆性温度试验、温度回给试验和吉门试验等。

Consideration of microstructure, the metal material has a face-centered cubic lattice of the austenitic steel, Reducing Valves copper and aluminum do not appear in the low temperature low temperature brittleness, but the hardness of aluminum and aluminum alloys is not high, the sealing surface of the wear-resistant aluminum , anti-scratch performance is poor, so the use of low-temperature valves have certain limitations, only used in low voltage and small-caliber valve.

从金相考虑，金属材料中具有面心立方晶格的奥氏体钢、铜和铝在低温状态下不会出现低温脆性，但因铝及铝合金的硬度不高，铝密封面的耐磨、耐擦伤性能差，所以在低温阀门中的使用有一定的限制，仅用于低压和小口径阀门中。

The authors calculated the fragility parameters of the samples based on the time-temperature superposition principle of dynamic mechanical performance and the constants C1 and C2 of the WLF equation.

利用DMA研究了天然橡胶及其改性物的低温动态力学性能，测定了样品的动态力学性能参数，并应用动态力学性能的时温叠加原理，由WLF方程的常数C1和C2进一步计算出材料的脆性参数。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。