aluminothermic welding of rails
...铁轨的铝热剂焊接.铝热焊接工资格、合同认可和焊缝的验收 英文名称： Railway applications - Track - Aluminothermic welding of rails - Qualifications of aluminothermic welders, approval of contractors and accepta..
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aluminothermic welding of rails
钢轨铝热焊
以上为机器翻译结果，长、整句建议使用 人工翻译 。