+**B18** is a designation often found in [Engineering](/wiki/engineering) or biological systems. It may refer to a specific [Engine](/wiki/engine) variant known for its performance characteristics, or a distinct protein within a larger complex. Its precise meaning depends on the field of study.
+## See also
+- [Component](/wiki/component)
+- [Designation](/wiki/designation)
+- [System](/wiki/system)
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