A logical unit number is simply the number assigned to a logical unit.

逻辑单元号是分配给逻辑单元的数字。

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Message-ID: This is the sequence number assigned to a message before sending.

Message - ID：这是在消息发送前被指派的序号。

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In computer storage, a LUN is simply the number assigned to a logical unit.

在计算机存储介质上，LUN仅是分配给逻辑单元的号码。

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The technology uses antennas to capture the identification number assigned to each phone and track its movement throughout the stores.

WSJ: Schumer: Don't track shoppers without consent

The key to pulling it off is the serial number assigned to each vehicle at the very first stage of production, where metal parts are welded together to form an engine compartment.

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Barristers acting on behalf of the accused questioned whether an IP address - a number assigned to every device connecting to the internet - could be used to identify the person who downloaded illegal content.

BBC: Law firm ACS: Law stops 'chasing illegal file-sharers'