The prevalent over-temperature caused tube bursting of high-temperature heating surface in large-capacity boilers in recent years has seriously endangered the safe and economic operation of units.
近年来，大容量锅炉高温受热面超温爆管现象普遍，严重危及了机组的安全、经济运行。
Secondly, the heating layer heating time is prolonged largely by using high-capacity external battery.
其次，采用大容量的外置电池使得发热层的发热时间也大大延长。
Secondly, the heating layer heating time is prolonged largely by using high-capacity external battery.
其次，采用大容量的外置电池使得发热层的发热时间也大大延长。
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