The serial number liú shuǐ hào generally refers to the number of participants in an activity; Bank code; Also used in industrial production, each product has its own unique serial number.

Commonly used in bank coding, that is, bank flow, recording personal business information, etc.

Example:

1. Can you tell me its serial number? I will check what the problem is.

2. At the same time, the response mechanism based on sequence number is adopted to ensure the retransmission of error and lost packets.

3. Using serial number as primary key in database table of information system can improve efficiency.

4. "serial number card" is also used to indicate the date of returning books.

5, mostly used in manufacturers, logistics and shopping malls. , record the serial number or barcode of the product.