bottom glass meaning in English

池底玻璃液

Looking through the bottom glass , you can observe the breathtaking play of the levers and springs of the column wheel chronograph in all its aesthetics . highest technical claims again meet lang heynes joy of completed shaping and the fine manual finish of the watch pieces
透过表底面的蓝宝石镜片可以看到计时计变档轮的摇杆和发条摆动，令人叹服且充满美感，高科技在这里再一次与完美的外形及细致的经手工完成的钟表部件完整地融合在一起。