| 释义 |
电弧diànhú正负两电极接近到一定距离时所产生的持续的火花放电。电弧能产生高温、强光和某些射线,用于照明、焊接、炼钢等。{electric arc; continuous sparkling discharge when anode and cathode come within a close distance. The intense heat, light and certain rays produced by electric arc are used for lighting, welding and steel smelting.} |