A researcher introduces the growing process of crystal to visitors at a lab of the Institute of Physics in the Chinese Academy of Science (CAS) in Beijing, capital of China, May 20, 2017. A total of 116 research institutes of the CAS throughout China participated the 13th "Public Science Day" starting on Saturday. (Xinhua/Jin Liwang)
A family visits the superconductor lab of the Institute of Physics in the Chinese Academy of Science (CAS) in Beijing, capital of China, May 20, 2017. A total of 116 research institutes of the CAS throughout China participated the 13th "Public Science Day" starting on Saturday. (Xinhua/Jin Liwang)
Children participate in an experiment at a lab of the Institute of Physics in the Chinese Academy of Science (CAS) in Beijing, capital of China, May 20, 2017. A total of 116 research institutes of the CAS throughout China participated the 13th "Public Science Day" starting on Saturday. (Xinhua/Jin Liwang)
A researcher introduces the growing process of crystal to visitors at a lab of the Institute of Physics in the Chinese Academy of Science (CAS) in Beijing, capital of China, May 20, 2017. A total of 116 research institutes of the CAS throughout China participated the 13th "Public Science Day" starting on Saturday. (Xinhua/Jin Liwang)
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