主回路中的蒸汽，不再同水一起循环，而是升腾起来。

Steam within the primary loop, now no longer circulating with the water, rises.

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SCAS是中国核动力研究设计院编制的反应堆二回路蒸汽活化产物源项程序。

SCAS is the source term code to calculate steam activation products in secondary loop of reactor, which is developed by Nuclear Power Institute of China.

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由被控对象的逆对象组成的局部反馈回路可以有效地克服给水扰动以及汽包水位的另一主要扰动——蒸汽流量的扰动。

Local feedback loop containing inverse model of controlled object is able to cancel feedwater disturbance and another important one, disturbance from steam flow.

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