闭域接続 closed user group service

整流接続 rectifier connection

主回路接続 traction power circuit schematics

电気接続図 electrical connection diagram

相手选択接続 virtual call connection

铅工接続 leaded joint

三相星形接続 three-phase star rectifier connection

三相千鸟接続 three-phase zigzag-start rectifier connection

接続词 conjunction

器具内部接続図 internal connection diagram