Its radar equipment was powered by a nuclear reactor.是什么意思？

Its radar equipment was powered by a nuclear reactor.

其雷达装置由一核反应堆提供动力。

its

pron. (it的所有格形式)它的，厥；

例句
The government is to accelerate its privatisation programme.
政府将加快其私有化计划的进程。

radar

n. 雷达，雷达装置，无线电探测器；

例句
At some stage he left the Artillery to command a radar unit.
有段时间他离开了炮兵部队去指挥一支雷达小分队。

equipment

n. 设备，装备，器材，配件，（工作必需的）知识，素养；

例句
All this equipment has received international acclaim from the specialist hi-fi press.
这套设备受到全球高保真音响专业报刊的赞誉。

was

v. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

powered

adj. 有动力装置的，用动力推动的；

例句
Some TVRs have power steering and conveniences such as central locking and powered windows.
一些特雷沃车型配有动力转向系统以及中央锁和电动窗之类的便利装置。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

nuclear

adj. 原子核的，原子能的，[细胞]细胞核的；

例句
...members of the advisory committee on the safety of nuclear installations...
核设施安全顾问委员会的成员

reactor

n. [化工]反应器，[核]反应堆，起反应的人，原子炉；

例句
The guts of the reactor have to be hauled out of the pressure vessel.
核反应堆的核心构件必须从压力罩中取出来。