While repairing the outline shape of guide idler with diamond pencil, adjust the parameter after putting forward the lathe.

用金刚石笔修整导轮廓形时，提出了机床调整参数。

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And any gentleman who’s ever beenbackhanded by a lady with her diamond ring should know a styptic pencil willstop the bleeding.

那些被戴着钻戒的女士们反手扇过耳光的先生们应该知道止血笔是管用的。

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In theory, at atmospheric pressure and lower temperature chemical changes are liable to take place that change diamond into graphite, similar to the stuff pencil leads are made of.

理论上，在大气压及较低的压力下，化学物质的改变倾向于使钻石转变成石墨，与用于做铅笔芯的物质相似。

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Think of it this way: The graphite in a pencil and a diamond differ only in how their carbon atoms are arranged.

FORBES: Tiny Miracles

Belonging to a class of worlds known as diamond planets, 55 Cancri e is thought to be rich in the element carbon, which can exist in a variety of structural forms such as graphite (the material used as pencil lead), graphene, or diamond.

BBC: Oddballs: The strange worlds beyond our Solar System