连接电瓶电缆，先连接正极电缆。
当充电时，锂离子运动到连接充电装置并含有电子的正极。
When they charged their battery, the lithium ions migrated to the anode where they combined with electrons from the charging device.
在锂电池充电时，锂离子从正极向负极移动，而在锂电池放电时，锂离子从负极向正极回流，为连接在锂电池的外接电路提供电流。
When the thing is discharged, the ions flow back and in the process cause a current to flow in an external circuit attached to the battery.
纳米管由导线连接在两个电触点之间，一个触点为负极，另一个为正极。
The nanotube was wired between two electrical contacts, one negatively and one positively charged.
我心怀疑虑地看着他用一张被特殊溶液浸湿的图画纸把一只锡罐包起来，然后将锡罐与电池的正极连接好。
I watched skeptically as he wrapped a tin can with a piece of drawing paper dampened with a special liquid, then linked the can to the positive pole of a battery.
总之，每个位的电力会通过你的地接点，如通过你的正极连接点一样。
After all, every bit as much electricity will flow through your ground point as through your positive connection point.
由平点后面出来的线必须被连接到电池的负极。另外一根则连接到正极。
The wire that comes out beside the flat spot must connect to the "-" side of a battery, the other wire to the "+" side.
LED的心脏是一个半导体的晶片，晶片的一端附在一个支架上，一端是负极，另一端连接电源的正极，使整个晶片被环氧树脂封装起来。
LED is the heart of a semiconductor chip, the chip is attached to one end of a stent, is the negative side, the other end of the power of the cathode, the entire chip package to be epoxy resin.
单极晶体管根据第一端子或者第二端子电连接于单极晶体管而具有负极性或者正极性。
The unipolar transistor has a negative polarity or a positive polarity in accordance with the first terminal or the second terminal electrically connected to the unipolar transistor.
单极晶体管根据第一端子或者第二端子电连接于单极晶体管而具有负极性或者正极性。
The unipolar transistor has a negative polarity or a positive polarity in accordance with the first terminal or the second terminal electrically connected to the unipolar transistor.
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