Under different pressures the flashing in riser of natural circulation system and its effect on flow stability were studied by the method of visual observation in synchronism with data recording.

采用可视化观察与数据同步记录分析相结合的方法，研究了不同压力条件下自然循环系统上升段中的闪蒸现象及其对自然循环稳定性的作用。

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They proclaimed the observation as the first visual - albeit indirect - proof of a planet outside our Solar System.

BBC: We saw it too, say astronomers