short wave telegraph telephone transmitter

例句：

1. 1. The short wave telegraph was the first communication system to be used in space.
   短波电报是第一个用于太空的通信系统。
2. 2. The telephone transmitter is responsible for converting electrical signals into sound waves.
   电话发射机负责将电信号转换为声波。
3. 3. The engineers worked tirelessly to develop a new type of short wave telegraph that could transmit data faster and more reliably.
   工程师们不懈努力，开发出一种新型短波电报，能够更快、更可靠地传输数据。