A new many-valley effective mass impurity state theory is presented.

本文提出了一种新的多能谷有效质量杂质电子态理论。

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There aren't many jobs in science for them, so they go to Wall Street and Silicon Valley to apply their analytical skills to more practical—and rewarding—efforts.

在科学领域适合他们的工作并不多，所以他们去华尔街和硅谷把他们的分析技巧应用到更实际、回报更多的工作中。

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His eighteen sixty-six painting "Yosemite Valley" gave many people on the East Coast their first introduction to California's beautiful mountain area.

VOA: special.2009.05.01

This includes emergency relief to as many as two-million Pakistani civilians who fled conflict in the Swat Valley region earlier this year.

VOA: standard.2009.10.05

Many other Silicon Valley-based firms and top US schools have become major partners for Russian companies.

FORBES: The US IT Market Opens Its Doors to Russian Business

That has fueled the creation of a Silicon Valley-like investment ecosystem that, not surprisingly, has profited many Silicon Valley businesses themselves.

FORBES: Wealth, Bribes and Lies: Ten Years Of Tracking China's Richest

Many have company-friendly tax regimes at which the valley's businesspeople look with envy.

ECONOMIST: Troubled cities 1