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单词
roentgen
释义
roentgen
The former unit of dose equivalent (see radiation units). It is named after the discoverer of X-rays, W. K. Roentgen
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proton decay
proton number
protostar
Prévost's theory of exchanges
pseudo-scalar
pseudo-vector
psi particle
psychrometer
Ptolemaic astronomy
pulley
pulsar
pulsatance
pulse
pulse jet
pulse modulation
pump
pyramid
pyroelectricity
pyrometric cones
pyrometry
pyrophoric
Q-value
QCD
QED
QFD
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更新时间:2026/3/30 15:09:48