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地动仪
dìdòngyí
oil
seismoscope
tech.
Chang's seismograph
地动仪:
28 phrases
in 11 subjects
Aviation
2
Engineering geology
1
General
1
Geophysics
1
Metallurgy
1
Nautical
1
Navigation
1
Space
1
Technology
17
United Nations
1
Wind Energy
1
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