The F series is designed for low power dynamic systems.

的F系列是专为低功耗动态系统。

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Quaternary system has been divided into four "series", including ten "f."..

第四系划分为四个“统”，十“个组”。

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Quaternary system has been divided into four "series", including ten "f."..

第四系划分为四个“统”，十“个组”。

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