invention
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Chemist Leo Baekeland | 化学家利奥·贝克兰
This article chronicles the life and work of chemist Leo Baekeland, inventor of Bakelite, the wor...
biography
chemistry
educational
3 阅读
Alexander Graham Bell: The Story Behind the Telephone | 亚历山大·格雷厄姆·贝尔：电话背后的故事
This article chronicles the life of Alexander Graham Bell, focusing not only on his invention of ...
biography
educational
history
3 阅读