What is another word for B-unit?
Pronunciation: [bˈiːjˈuːnɪt] (IPA) 
The term "B-unit" is often used to refer to a secondary or backup unit. There are several synonyms that can be used in place of B-unit, including standby unit, spare unit, auxiliary unit, backup unit, and redundant unit. These terms all imply that there is another unit available which can be used in the event that the primary unit is not functioning properly or needs to be taken out of service temporarily. In some industries, such as aviation and manufacturing, having a backup unit is essential to ensure the safety and reliability of operations. Regardless of the terminology used, the function of a B-unit is to provide a reliable backup for critical systems.
