In order to repair the damaged cutting tools,hardfacing flux-cored wire named DG7 was developed.

 
  • 文中从刀具的堆焊修复着手开展了盾构机刀具国产化研究,开发了DG7堆焊药芯焊丝。
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  • 深远海浮式风电平台 - deep-sea floating wind power platform
  • 京雄高速公路 - Beijing-Xiongan expressway
  • 农业及相关产业增加值 - the added value of agriculture and related industries
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