The effect of porous silicon rock powder mixing with ordinary Portland cement on properties of cement is studied.

研究了多孔硅质岩矿粉掺入到普通硅酸盐水泥中对水泥性能的影响。

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Yet in Silicon Valley, where pasty-faced youths with a penchant for churning out computer code are often feted as rock stars, celluloid fantasy can sometimes become reality.

但是在硅谷，面容苍白、痴迷于研究计算机代码的年轻人经常跟摇滚明星一样受到追捧，电影里的想象有时会变成现实。

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'Think Silicon Valley, the shlumpy, nerdy, hoodie thing, ' she says. 'It's very hard to look like a rock star or leader-Ly if you do the shlumpy, nerdy thing as a woman.

她说，想想在硅谷，那种懒散的、书呆子气的连帽衫，如果女性穿上这样的衣服，很难看起来像是摇滚明星或领导者。

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The ocean floor is basalt rock, a mixture of silicon and magnesium.

VOA: special.2011.01.04

In addition, Schmidt makes use of his own personal status as a Silicon Valley rock star to gain the confidence of overawed lawmakers.

FORBES: Mister Schmidt Goes To Washington

Although a registered Republican, Kirsch has been a supporter of Gore's bid for the presidency since he met the vice president at a Silicon Valley fund-raiser featuring rock star Elton John.

CNN: Republican philanthropist pays pro-Gore legal bills