But at the last minute on that night, a bearing in the antenna failed, rendering it nearly useless.
可是就在那天晚上的关键时刻，天线上的一个轴承突然失效了，几乎无法工作。
2
The work principle of directional detector and the key technique for identifying target bearing are analyzed. Design and calculation of detecting antenna have been carried out.
分析了定向探测器的工作原理和目标方位识别的关键技术，并对探测天线的设计做了详细的分析和计算。
3
A new structural project of the bearing turntable for the radar antenna is put forward in this paper.