backup coolant system

基本解釋

But the tsunami wiped out power to the plant, which took down the main coolant system, and a wave destroyed the diesel-based backup system.
但海嘯切斷了核電站的電力供應(yīng)，導(dǎo)致主冷卻系統(tǒng)停機，以柴油為燃料的備用系統(tǒng)同時被毀。
At the onset of the earthquake, the plant automatically shut down the fission process, which normally would leave the coolant system--both the main one and a backup generator--still operational.
地震發(fā)生時，核電站已經(jīng)自動中止裂變反應(yīng)過程，一般只剩下冷卻系統(tǒng)――主發(fā)電機和備用發(fā)電機――仍處于運行狀態(tài)。