- dorr classifier
- 耙式分级机
English-Chinese geology dictionary (英汉地质大词典). 2013.
dorr classifier
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John V. N. Dorr — Dr John Van Nostrand Dorr (1872 1962) was an industrial chemist active in early to middle twentieth century. He attended Rutgers University, where he was admitted to the Zeta Psi fraternity, graduating in 1896. He was awarded the Perkin Medal by… … Wikipedia
