| 摘要 |
PCT No. PCT/SE79/00069 Sec. 371 Date Nov. 25, 1980 Sec. 102(e) Date Nov. 25, 1980 PCT Filed Mar. 28, 1979 PCT Pub. No. WO80/02017 PCT Pub. Date Oct. 2, 1980.A method for the protective magnetization of vessels by using magnetic loops (11). The field strength of the magnetic field surrounding the vessel is detected by means of a Hall generator (12) and the current through the magnetic loop (11) is controlled in dependence on the field strength thus detected. |
