主题：生活中的疑问----钢管的切割 -- 罗博
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复 why?
but have to find more on the exact mechanism.
The link below may offer a bit of help.
- 相关回复 上下关系5
压缩 3 层
🙂明白刚玉是怎么回事了，谢谢！ 罗博 字0 2007-11-07 05:38:21
🙂砂輪是切割金屬的上選 修竹 字24 2007-11-06 18:56:14
🙂why? 罗博 字0 2007-11-06 18:59:04
🙂Know it
🙂英文的wiki看不到哟 罗博 字0 2007-11-06 19:49:57