常見例句雙語例句This paper introduced the design purpose and working principle of Model JY Train Approaching Announciator and analyzed the features of the system.介紹了JY型列車接近語言預警機的軟、硬件設計和工作原理，并對其技術特點進行了分析。Voice call the police briefness safety dependable possesses battery capacity lack sensor damage warning can timely remind consumer to announciator proceed maintain.聲音報警，簡單、安全、可靠具有電池容量不足、傳感器損壞警告，可及時提醒用戶對報警器進行維護。 返回 announciator