pantograph framework

例句：

1. 1. The telegraph company installed a new pantograph framework to improve communication.
   电信公司安装了一个新的电报架来改善通信。
2. 2.The engineers had to dismantle the old pantograph framework and replace it with a modern one.
   工程师们不得不拆除旧的电报架并用现代的替换它。
3. 3. The pantograph framework is crucial for transmitting long-distance messages over wires.
   电报架对于通过电线传输远距离消息至关重要。