Category:Couplers: Difference between revisions
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Coupling is the transfer of energy from one medium to another | |||
== Subcategories == | |||
*'''[[:Category:Directional couplers|Directional couplers]]''' | |||
[[Category:Communications|{{PAGENAME}}]] | |||
Revision as of 18:27, 6 June 2011
Media in category "Couplers"
This category contains only the following file.
1939 Railroad Car Couplers.jpg 700 × 449; 108 KB
