Signal bell 信号铃 ; 信号钟 ; 振零讯号 ; 旌旗灯号铃
block bell signal 闭塞铃信号
alarm bell signal 警铃信号
bell signal railway 是什么意思
signal alarm bell 信号警铃 ; 告警铃
bell and flasher signal 平交道警报器
Blinks tray icon when a bell signal is received.
托盘图标在收到振铃信号时闪烁。
Bell signal systems and communication systems must be using at same time for decline hoisting system.
斜井提升应同时设立电铃和电话两套信号系统。
They found that this alarm bell can sometimes turn a “buy” signal into a “sell”.
他们发现,这样的警告信号通常会将买入信号变为卖出信号。
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