Meaning of 10BASE-2 in English
The 10Base-2 standard (also called Thinnet) uses 50 ohm coaxial cable (RG-58 A/U) with maximum lengths of 185 meters. Cables in the 10Base-2 system connect with BNC connectors. The Network Interface Card (NIC) in a computer requires a T-connector where you can attach two cables to adjacent computers. Any unused connection must have a 50 ohm terminator. The 10Base-2 system operates at 10 Mbps (10 megabits per second).
DAX English glossary of key connectivity terms. Английский глоссарий основных терминов по коммуникациям DAX. 2012