How to realize the BIT, testing and maintenance in a radar system is the main point of this paper.
在雷达系统中如何实现雷达的自检、测试及维护是本篇论述的主要内容。
On the condition that the continuous service time is given, the main point of the preventive maintenance is the decision of maintenance reliability level.
当后续使用时间已知时，预防性维修的关键是维修可靠度水平的确定。
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