silver contact meaning in Hindi

Examples

1. The photographs _ sepia-toned, gelatin-silver contact prints _ are an affectionate and affecting portrait of a world of gentle make-believe, quiet beauty, mystery and wonder.
2. Not all relay circuits can be proved so there is reliance on construction features such as carbon to silver contacts to resist lightning induced contact welding and to provide AC immunity.
3. I have an antique telegraph relay, known as a  Pony Relay that has an electromagnet coil that acts on a hinged moving contact with a silver contact on each side, much like any relay.