连接放大器前，务必先连接地线。
Be sure to connect the ground cord before connecting the amplifier.
背板具有引脚，该引脚与接地线电性连接。
The back board is provided with a pin connected electrically with the ground wire.
线圈有三孔插头，其中上为接地线，左右孔接工作导线。
Coil with three-hole plug, which on the ground, then work around hole lead.
这条接地线会将负面能量释放掉，并引入正向积极的能量。
This grounding cord releases negative energy and also brings in positive energy.
一是通过优化电路设计、配线分离，包括含接地线的线路板设计；
First, through the optimization of circuit design, matching line separation, ground line board design;
一是通过优化电路设计、配线分离，包括含接地线的线路板设计；
First, through the optimization of circuit design, matching line separation, ground line board design;
应用推荐