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单词
age ratio
释义
age ratio
[`āj ´rā·shō]
GEOLOGY
The ratio of the amount of daughter to parent isotope in a mineral being dated radiometrically.
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power output tube
power pack
power package
power plant
power rating
power ratio
power reactor
power rectifier
power relay
power resistor
power saw
power semiconductor
power series
power set
power shovel
power-shovel mining
power slips
power spectrum
power station
power steering
power stroke
power supply
power supply circuit
power-supply rejection ratio
power switch
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