There are many ways to measure the power consumption of an electronic message centre (EMC).

测量电子信息中心(EMC)的电源功耗有很多种方法。

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A certificate is an attachment to an electronic message used to verify the identity of the party and to provide the receiver with the means to encode a reply.

数字证书最通常的一个应用是验证一个正在发送信息的用户是否是他或她所宣称的那个人，并提供给接收者对应答进行编码的方法。

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A digital signature can be used to authenticate the identity of the sender of an electronic message. The signature will be different for each message or document being signed.

可用于鉴定电子信息发送人的身份，而每一信息或文件可有不同的签署。

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That file was electronic message, so suddenly in about 1971, we had e-mail. So an e-mail was pretty much the major use of the internet for the next 20 years.

那种文件就是电子消息，如此突然的，约在,1971年，我们有了电子邮件，电子邮件,基本上是此后20年互联网的主要运用形式。

麻省理工公开课 - 媒体、教育、市场课程节选

Brent was prosecuted under the Telecommunications Act, relating to the sending of an electronic message.

BBC: Blogger fined for 'menacing' rant

Those who came of age in the "You've got mail" era can reminisce fondly about arriving home from school and checking their AOL accounts to see if anyone sent them an electronic message.

NPR: As Facebook Matures, Is It Losing Its Edge?

When Bavarian prosecutors launched their investigation, CompuServe, based in Columbus, Ohio, blocked access to 200 electronic message boards for all of its then four million users worldwide, setting off an international debate over censorship on the internet.

BBC: News | Europe | Ex-CompuServe boss acquitted