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单词
planoconcave lens
释义
planoconcave lens
[¦plā·nō`kän´kāv `lenz]
OPTICS
A lens for which one surface is plane and the other is concave.
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pervaporation
perveance
perversion
perviousness
pessary
pessulus
pesticide
pestilence
PET
peta-
petal
Petalichthyida
petaling
petalite
Petalodontidae
Petaluridae
petasma
petechiae
peter out
Petersen coil
Petersen grab
Peters' formula
petiole
petitgrain oil
petit mal
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