对接接头辐条和铝更轻，但需要在整形和拉紧额外技能。
Butted spokes and aluminum nipples are lighter but require extra skill during truing and tensioning.
介绍了铝热焊接技术的原理、阴极保护电缆焊接接头的性能及经济效果。
Principle of exothermic welding technique, properties of welding joint of cathodic protection cable and cost economization of the process are discussed, too.
试验结果表明，铝和镀锌钢能得到成形良好的搭接接头。
The results indicate that good lap joint between aluminum and galvanized steel sheet can be made in appropriate parameters.
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