Exactly, so this sentence is incorrect: > Ballpoint pen tips are microscopic tun... | Hacker News

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margalabargala 19 days ago | parent | context | favorite | on: Why jet engines aren't made in China

Exactly, so this sentence is incorrect:

> Ballpoint pen tips are microscopic tungsten carbide ball held inside ultra-thin steel sockets

OneDonOne 19 days ago [–]

Yes indeed, you are correct. My mistake.

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