1, CAT is the abbreviation of English Certified Accounting Technician, which is an internationally recognized accounting technician. The qualification certificate is an internationally recognized accounting professional qualification granted by chartered certified accountants Association (ACCA).

2. Computer-aided translation (CAT) can help translators complete translation with high quality, high efficiency and ease. It does not depend on the automatic translation of the computer, but completes the whole translation process with the participation of people.

3. Catalyst, in English, refers to a substance that can change (accelerate or slow down) the chemical reaction rate of other substances in a chemical reaction, but its quality and chemical properties have not changed before and after the reaction (it will change during the reaction). It is also called a catalyst.

4.CAT (catalase from Micrococcus lysocladium) is an enzyme scavenger, also known as catalase, which is a binding enzyme with iron porphyrin as an auxiliary group.

5.cat command is the abbreviation of English words catenate and concatenate (both meaning connection) in Unix and Unix-like systems, and its function is to display or connect multiple text files; At Apple? ProDOS is the abbreviation of English words catalog and catalog, which is used to display a list of files in a directory.

The above contents refer to Baidu Encyclopedia -CAT (internationally recognized accounting technician), Baidu Encyclopedia-Computer Aided Translation, Baidu Encyclopedia -CAT (catalyst), Baidu Encyclopedia -CAT (catalase) and Baidu Encyclopedia -CAT (operating system command) respectively.