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once they get a temperature reading on the thermocouple indicating they found the sun, then they slow down and do a fine search, then all the petals will move into position, and then the engine will start.
一旦热传感器上的温度显示已经找到了太阳, 速度就降下来,开始微调, 每个瓣体各就各位,引擎开始工作。