| 摘要 |
1,010,116. Electric conductors. STANDARD TELEPHONES & CABLES Ltd. Aug. 31, 1962, No. 33536/62. Drawings to Specification.. Heading H1A. A cable intended to be used for sending signals to vehicles has a central steel wire core, alternate steel, and copper wires surrounding the central core and an insulating layer of plastics material, e.g. P.V.C., which is 1.5 to 3 times the conductor diameter. |
