engine telegraph order indicator

例句：

1. 1. The engineer installed the new engine telegraph order indicators to improve efficiency.
   工程师安装新的引擎电报订单指示器以提高效率。
2. 2.The company's new order indicator system is designed to streamline the purchasing process.
   公司的新订单指示系统旨在简化采购过程。
3. 3.The technician used the order indicator to quickly locate the faulty part.
   技术人员使用订单指示器迅速定位了故障部件。