里面涵盖几篇文章，讲述了GPRS的应用技术灯 -Inside cover articles about the application of the GPRS technology lights

路灯工程常用详图，包括：电缆井、控制箱、灯基础等。路灯工程常用详图，包括：电缆井、控制箱、灯基础等。-Lamps commonly used in engineering detailing, including: cable wells, control box, lamp base and so on. Lamps commonly used in engineering detailing, including: cable wells, control box, lamp base an