Once at the tracking station, Greg reached into the tiny hole and packed grease around the failed bearing.
格雷格·福思一到站里，立刻就把他的小手伸进了这个小孔并把油脂涂抹在已经失效轴承的四周。
2
The model with the two-buoy arrays used for tracking of underwater moving target for bearing estimation is presented, and the spatial distribution of tracking accuracy is described.
介绍了具有方位估计功能的二元浮标阵用于跟踪水下动目标的模型，并描述了跟踪精度的空间分布。
3
It features high sensitivity, high bearing accuracy and advanced performance in detection, tracking and system expansion.