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ASME/ANSI B16 Standards for Pipes and Fittings

The ASME B16 standards covers pipes and fittings in cast iron , cast bronze, wrought copper and steel ... The ASME - American Society of Mechanical Engineers - ASME/ANSI B16 Standards covers pipes and fittings in cast iron , cast bronze, wrought copper an...

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最近好多朋友給我留言,說朋友圈裡面這個「桃子和西瓜不可一起吃」的謠言又開始流行了。       也是啊,又到夏天了嘛。去年這個謠言也傳播過一回,當時還上了排行榜,今年原封不動地又來了!       對如此弱智的謠言,多數網友的態度如下: ...

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