In the next lecture we're gonna be talking about reactor physics and then a review of reactor kinetics and control. We'll then study feedback effects and depletion.

下一课，我们会谈论，反应堆物理，然后回顾反应堆，动力学和控制，然后我们会研究反馈，反应和损耗。

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Control rods are used in a PWR typically to change the power level and also to shut down the reactor.

控制棒是在一个加压水冷却反应堆里使用的，用来改变能量的级别，也可以用来停止反应堆。

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The control rods are also used to shut the reactor down from 100% power to about 7% power (residual or decay heat).

它也用来关闭反应器，可以从100%的动力降到7%动力（残留的延迟的热量造成）。

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Under its terms, Siemens would replace the reactor instrumentation and control mechanisms supplied by Moscow.

CENTERFORSECURITYPOLICY: Center for Security Policy | CIENFUEGOS �� ��A HUNDRED FIRES��: MUCHAS GRACIAS MOSCOW, BUT NO AMERICAN CHERNOBYLS

TOKYO Japan's nuclear crisis showed signs of spinning out of control Tuesday, after officials reported a third explosion and warned of possible damage to a critical reactor container at the troubled Fukushima Daiichi nuclear-power complex.

WSJ: Japan's Nuclear Crisis Escalates