That leaves reconnecting the plant to the grid and restarting the cooling pumps inside as the last line of defence before a major release of radiation.
这样，核电站和铁网再次相连，内部冷却泵重新启动，它们成为严重核辐射爆发前的最后防线。
The safety of the operation of power equipment is first line of defense to avoid major accidents grid, which is the most critical defense systems for the power transformer equipment.
电力设备的安全运行是避免电网重大事故的第一道防线，而电力变压器是这道防御系统中最关键的设备。
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