The submarine's propulsion system is believed to be nuclear, turbo-electric arrangement, consisting of one pressurised water reactor (PWR), with one shaft.
潜艇推进系统据信是核、涡-电布置，包括一台压水反应堆（PWR）组成，采用单驱动轴。
Rescuers said they would resume drilling a separate shaft as a back-up plan in case of problems with the first one.
救援人员称，作为备用他们将会重新开钻另一口竖井，以防第一口竖井出现问题。
They made the lampstand of pure gold and hammered it out, base and shaft; its flowerlike cups, buds and blossoms were of one piece with it.
他用精金做一个灯台，这灯台的座和干，与杯，球，花，都是接连一块锤出来的。
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