不是电网相关理念，而是线缆本身。

Not the idea of it, but the wire itself.

自带水准仪，线缆管理，可锁保险装置(包装不带锁)。

Intergrated bubble level, Cable management, lockable safety device (lock not included).

综合水平仪，线缆管理，可锁定安全装置(不包括锁)。

Integrated bubble level, Cable management, lockable safety device (lock not included).

反射波据此就可以用来确定线缆的长度和规格。

The reflection can thus be used to determine the length and gauge of the wire.

这根弯弯曲曲的线缆上还能找到开机键和锁屏键，以及另外一个麦克风，用于噪音消除和提升语音质量。

You can also find the power button and lock screen key on this squiggly cable, as well as another microphone for noise cancellation and improved voice quality.