仪器制造

共 2 种图书

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A Treatise on Meteorological Instruments 封面

A Treatise on Meteorological Instruments Zambra, Joseph, 1822-1897 Project Gutenberg · 2019 Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and …

The Earliest Electromagnetic Instruments 封面

The Earliest Electromagnetic Instruments Chipman, Robert A. Project Gutenberg · 2023 Project Gutenberg was the first provider of free electronic books, or eBooks. Michael Hart, founder of Project Gutenberg, invented eBooks in 1971 and …