３４０ ｍ 铋系高温超导导线近日在清华大学应用超导研究中心研制成功。这是我国目前高温超导长导线的最新记录，标志 着我国已掌握了处于世界先进水平的超导线材产业化技术。 此次研制成功的高温超导导线为 ３７芯，长 ３４０ ｍ，宽３．４３ ｍｍ，厚０． １５ ｍｍ，截面面 340 m bismuth-based high-temperature superconducting wire recently developed at Tsinghua University Applied Superconductivity Research Center. This is the latest record of the current high-temperature superconducting long wire in our country, which indicates that our country has mastered the superconducting wire industrialization technology in the world’s advanced level. The successful development of high-temperature superconducting wire 37 core, length 340 m, width 3.43 mm, thickness 0. 15 mm, cross section