优酷离线视频无法播放:什么是国际粉晶衍射数据中心(ICDD)

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ICDD 国际粉晶衍射数据中心
http://www.icdd.com/

The International Centre for Diffraction Data (ICDD is a non-profit scientific organization dedicated to collecting, editing, publishing, and distributing powder diffraction data for the identification of crystalline materials. The membership of the ICDD consists of worldwide representation from academe, government, and industry.

青蛙,蛇,刺猬