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蛙跳效应
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蛙跳效应
leapfrog effect
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portable document format (PDF)
portable document format (PDF)
portable document format--portable document format (PDF)
portable earthing conductor
portable fence
portable firearm
portable fire extinguisher
portable fire pump with engine
portable gamma back scatter thickness meter
portable hoist
portable image scanner
portable ionization chamber
portable irrigation sprinkler
portable life support system
portable loader
portable loader
portable logarithmic scintillator exposure ratemeter
Portable Media Player
Portable Media Player (PMP)
Portable Media Player--Portable Media Player (PMP)
portable meridian circle
portable mine detector
portable missile
portable mixer
portable multichannel analyzer
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