bell signal
短語(yǔ)詞組
- bell cable signal cable 信號(hào)電纜
- jingle bell signal bell 信號(hào)鈴
- block bell signal 閉塞鈴信號(hào)
- bell and flasher signal 平交道警報(bào)器
- bell signal railway 是什麼意思
- Signal bell 信號(hào)鈴;信號(hào)鍾;振零訊號(hào);旌旗燈號(hào)鈴
- signal alarm bell 信號(hào)警鈴;告警鈴 返回 bell signal