求翻译：本系统采用太阳能供电。主要是着重于太阳能供电这一模块，当太阳光充足的时候，由太阳能给负载供电，当太阳能供电不足的时候由蓄电池给负载供电，蓄电池电量不足时，而且此时也没用太阳的时候，采用市电给负载进行供电。市电一般是交流220V，所以在接入负载的时候要进行转换。本文会对整个系统的各个模块配合电路图做详细的介绍。对于交通灯控制模块作一些简要介绍。是什么意思？

The system uses solar power. Mainly focus on solar-powered module, when sufficient sunlight from solar energy to power the load, when the solar-powered by the battery to power the load when battery power is low, and useless the sun when the mains power supply to the load. Mains are generally AC 220v

This system uses solar power. focused primarily on solar power module, when sunlight when sufficient power from solar energy to the load, when solar power is low by the time the battery power to the load, the battery is running low, and this is the time when Sun is useless, mains power to the load.

This system uses the solar energy power supply.Mainly is supplies power emphatically in the solar energy this module, when the sunlight is sufficient, by solar energy to load power supply, when the solar energy power supply is insufficient time when by accumul

This system uses solar power. Mostly focused on solar power modules, when too sunny time, load power supply by solar energy, when the lack of solar power from the battery to the load power supply, battery power is low, but at this point is useless when the Sun, used to power supply power to the load