英语释义
1. a code consisting of a group of printed and variously patterned bars and spaces and sometimes numerals that is designed to be scanned and read into computer memory and that contains information (such as identification) about the object it labels
2. something (such as a DNA sequence) that uniquely identifies a species of organism
…they now plan to analyze each fish sample by decoding a certain tiny piece of DNA that can serve as a unique bar code for the species.
— Christen Brownlee
3. a group of thick and thin lines that is placed on a product so that a computer can get the price of the product and other information about it
4. a group of thick and thin lines placed on a product that represents computerized information about the product (as price)