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X射线伦琴[R;暂时与国际单位制并用的照射量单位]
el.
roentgen
射线伦琴:
79 phrases
in 10 subjects
Agriculture
2
Automobiles
1
Earth sciences
1
Electronics
4
General
6
Metallurgy
34
Oil / petroleum
10
Space
1
Sports
1
Technology
19
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