Based on PWM technique, the energy from battery discharges return to the master tape of DC, which has the advantage transmitting energy through two directions and realizes energy callback.

采用PWM调节方式，实现了能量的双向传递，将电池放电能量回馈到直流母带，解决了电池放电能量利用这一技术难题。

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Proper use and maintenance battery is driving a car with technical personnel must master a foreign technology.

正确使用和维护蓄电池是汽车驾驶与技术人员必须掌握的一门技术。

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Each is, appropriately, adorned with a four-claw dragon on the battery cover, and the engraving process is rather lengthy: it involves 20 stages and takes four highly-skilled master craftsmen 36 hours, eight of which are dedicated just to the dragon's scales.

ENGADGET: Vertu rings in the Year of the Dragon by welcoming a trio of Signature luxury phones