| 摘要 |
An electric cable having one or more insulated cores surrounded by a corrugated metal sheath and having a tubular covering intermediate the core and the sheath which covering is softer than the core and is deformed by the sheath corrugations which are embedded therein. The covering may be wrapped tapes of crepe paper or expanded foam synthetic resin or a tube of synthetic resin extruded over the core or cores. |
