现在该系统有两种主要的类型-电池(电子型)和飞轮(机械型)。

There are principally two types of system - battery (electrical) and flywheel (mechanical).

youdao

现在该系统有两种主要的类型-电池(电子型)和飞轮(机械型)。

There are principally two types of system - battery (electrical) and flywheel (mechanical).

youdao