单词signal-board
网络: 信号盘；标识牌；亯号盘
the protection hood holds the signal board and the middle and upper part of the sensor seat.
有一防护罩将信号板、传感器座的中上部罩入其中。
Design and Realization of a Kind of USB Interface Movable Digital Video Signal Board
一种基于USB接口的动态黑白数字视频信号源板的设计与实现
The Number Marking Device for the Computer-Controlled Signal Board
微机控制标志板打号机