These materials become quite soft and flexible above critical temperature.
这些材料在临界温度以上变得十分柔软和易于弯曲。
Above the critical temperature and under high pressure the vapor may become as dens and as incompressible as the liquid at lower temperature.
在临界温度以上和高压下，蒸汽密度可能变得象在低温下液体那样稠密且不可压缩。
Hardening. This is the process of heating to a temperature above the critical range, and cooling rapidly enough through the critical range to appreciably harden the steel.
淬火。这个工艺是把材料加热到临界温度范围之上，然后迅速冷却到临界温度范围以下，使钢材明显变硬。
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