The plume temperature is an important parameter, for solid propellant rocket engines and it is useful for determining the combustion process of the engine.
推进剂的羽焰温度是固体推进剂火箭发动机的重要参数，对于研究发动机内的燃烧过程具有重要价值。
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The temperature of a high temperature, high pressure plume solid propellant rocketengine is difficult to measure but is useful for determining the combustion status of the engine.