diaphone
1. two-tone diaphone
双音发生器
2. Uygur-Chinese diaphone
对音
3. Chengshan Cape, the most east point of China's coast. The showing lighthouse and diaphone built by english over hundred years ago are still in use today.
成山头在离威海不远的东边,是中国海岸线的最东端。百年前英国所建灯塔,和雾笛一起沿用至今。
4. Arabian-Chinese diaphone
阿汉对音