NB传动模组是一种紧凑型单轴驱动器，其中集成了导轨和精密滚珠丝杠。
The NB BG type is a compact single axis actuator, which integrates a slide guide and precision ball screw.
对于单马达转向架，转向架上的两根轴由同一个马达驱动，常常会遇到扭转的共振，这将导致周期性的滑动。
Monomotor bogies, where both axles of the bogie are driven by a single motor, often encounter torsional resonances, which lead to periodic longitudinal slip.
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。
The submarine's propulsion system is believed to be nuclear, turbo-electric arrangement, consisting of one pressurised water reactor (PWR), with one shaft.
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