electrical pen
电子笔
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The principle of the electrical pen for online signature verification discussed theoretically.
从理论上分析了在线签名鉴定电笔的原理。
youdao
Since the pen was made of plastic, there wasn't a risk of encountering electrical voltage when I pushed in the remainder of the disengaged breaker.
WSJ: Buzz Aldrin on His Lunar Home, the Eagle
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