delta-delta connection

基本解释

Three-phase winding, 4-wire delta connection.
三相绕组，开式三角形连接。
Three-phase winding, open delta connection. Ungrounded or grounded can be specified.
三相三线绕组，三角形或网状连接，接地或不接地。
Three-phase winding, 4-wire delta connection. Ungrounded or grounded can be specified.
三相三线绕组，三角形或网状连接，接地或不接地。

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ENGADGET: Delta expanding Gogo in-flight WiFi to select international flights beginning in 2013