thermit mold 发热熔接用模...thermit reaction 铝热反应...thermit riser 铝热冒口...thermit crucible 发热熔接用坩埚...thermit process 铝热法...thermit mixture 发热熔接混合剂...thermit welding 铝热熔接...pressure thermit welding 加压热剂焊...
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