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Web在冶金学中,不锈钢(Inox)指的是以重量计,铬含量超过11.5%的铁合金。这个名称源于这种钢不像普通钢那样容易腐蚀生锈。 WebCCS E690是海洋渠道用钢,海洋渠道是在海洋上进行作业的特别场所,服役期比船只类高50%。. 开发海洋工程用钢、并最早完成了ABS、DNV、CCS三家船级的认证,取得了 … how to restrict internet access on iphone
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