200x100x6.3MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (28.30 KG/M) 180x180x5MM (SHS) SQUARE STEEL HOLLOW SECTION (27.40 KG/M) 200x100x8MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (35.40 KG/M) 180x180x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (34.20 KG/M) 200x100x10MM (RHS) RECTANGULAR ...
200x200x6.3MM (SHS) SQUARE STEEL HOLLOW SECTION (38.20 KG/M) 250x150x10MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (59.30 KG/M) 200x200x8MM (SHS) SQUARE STEEL HOLLOW SECTION (48.00 KG/M) 250x150x12.5MM (RHS) RECTANGULAR STEEL HOLLOW SECTION (73.00 KG/M) 200x200x10MM (SHS) SQUARE STEE...
世纪9年代,纳米产品闯进世人生活,不断有大量信息向人们展示纳米技术给生活带来的奇妙变化。正如科学院纳米科技项目科学家白春礼院士所说,“一个崭新的纳米的世界提供给人类的将是不同于以往任何经验的东西”。纳米技术是21世纪关注的重大关键技术之一,也是信息技术、生命科学、分子生物学、新材料等研究的技术基础。在...