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iso standards on screw heads
iso standards on screw heads
ingcastro (visitor)30 may 01 16:29 i need to get the iso standards on screw heads and threads, nomenclature, etc. i´m a mechanical engineering student in need of quick an accurate information, but i also don´t have money to buy them. where can i get them? |
所有的时间均为北京时间。 现在的时间是 05:56 AM. |