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1.The control rod cluster is crucial for maintaining the stability of the nuclear reactor.
控制棒群对于保持核反应堆的稳定性至关重要。
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2. During maintenance, the engineers carefully inspected the control rod cluster to ensure its integrity.
在维护期间，工程师们仔细检查了控制棒群，以确保其完整性。
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3. The control rod cluster was removed from the reactor core to prevent further damage during the emergency shutdown.
在紧急停机过程中，从反应堆核心中移除了控制棒群以防止进一步损坏。