调查显示，挑战者号发射当日低温，导致火箭推进器上橡胶O行环密封圈失效，进而引起爆炸性气体泄露。
Theinvestigation showed that low temperatures on the day of the launch caused arubber “O-ring” seal on one of the rocket boosters to fail, which led to a leakof explosive gases.
聚硅烷橡胶因性能随温度变化小，故在高温和低温的场合都能用。
Silicone rubbers are used for both high and low temperature applications, since their properties change little with temperature.
此方法不仅能够使高压天然气的压力能得到有效的回收利用，而且能够降低废旧橡胶低温粉碎的成本。
It could not only recover the pressure energy of high-pressure gas, but also reduce the cooling cost for tire cryogenic comminution.
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