French artist and inventor of the daguerreotype process for obtaining positive photographic prints.
达盖尔,路
·雅克·曼德1789-1851法国艺术家和发明家,发明
银版摄影术,能洗出照片的正画来。
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集 In 1980, when Louis and Walter Alvarez were looking at the sedimentation rates, they weren't really interested so much in the extinction of dinosaurs, they were looking at, measuring the rate of sedimentation of deep ocean sediments.
在1980年路
和沃尔特·阿尔弗雷兹当时在研究沉积速度,他们对恐龙灭绝并没多大兴趣,他们关注的是,对深海沉积物沉积速率的测量。
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