• When exposed to a radio signal, they use its energy to send back the information they contain, mostly a long number identifying an object.

    这些标签暴露无线电信号下时,它们将利用信号的能量发回包含信息,这些信息大部分是用于识别物品的长串数字

    youdao

  • Tom creates an atomic domain for the credit card number, identifying this as a character field (char 19).

    Tom信用卡创建一个原子并将其标识字符字段(CHAR19)。

    youdao

  • Tom creates an atomic domain for the credit card number, identifying this as a character field (char 19).

    Tom信用卡创建一个原子并将其标识字符字段(CHAR19)。

    youdao

$firstVoiceSent
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