signal repeater box信号复示器箱
lab signal socket box[电] 实验室信号插座箱
Signal wall box信息壁盒
signal collection box数据采集盒
a signal-box信号所
signal indicator box信号盒
signal receiving box信号接受盒
signal converter box信号转换盒
signal transform box信号变换盒
N-COUNT（可数名词） A signal box is a small building near a railway, which contains the switches used to control the signals. 信号房; 位于铁路附近，内含控制信号的开关