As a very crude approach to reconstructing a scan raster on the TV tube, these pulses can be stripped off and individually utilized to trigger a pair of single sweep generators.
作为一种非常粗糙的重建电视显像管扫描光栅的方法，这些脉冲可以剥离出来单独用于触发一对扫描发生器。
2
In order to obtain accurate indications of range, the linear sweep of the cathode-ray tube must be timed precisely.