因为任何气体在一点温度和压力下都可以液化，温度越高，液化所需要的压力也越高，但是当温度超过某一数值时，即使在增加多大的压力也不能液化，这个温度叫驻点温度。
结果表明，助推段驻点温度上升很快，在巡航一段时间后温度逐渐达到平衡；
The results show that the temperature of body stagnation region increases rapidly at boosted period, and it will come to balance after entering cruise period.
计算结果表明：驻点温度随热防护层厚度的变化并不明显，而冷却系统功率随热防护层厚度增加急剧降低；
The results indicate that the thickness variations exhibit no significant influence on stagnation temperature, while the cooling power drops sharply as the thickness increases.
测得驻点烧蚀边界层的温度分布与相应的理论计算结果符合较好。
The temperature profiles measured from the boundary layers at stagnation-point are reasonable in agreement with the results of theoretical calculation.
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