In this scheme a definition of "Unique valley function"(U.

首先给出＂单谷函数＂的定义；

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San Francisco is just north of "Silicon Valley, " the home of many U.

旧金山就在有许多家高科技公司的“硅谷”的北部。

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San Francisco is just north of "Silicon Valley, " the home of many U.

旧金山就在有许多家高科技公司的“硅谷”的北部。

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