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用α衰变放射性核素制成的,以发射α辐射为主的放射源。
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discontinuous wave
discontinuum
discord
discordance
discordant
discordant permutations
discordant sample
discothecium
discotic liquid crystal
discotic phase
discotics
discount
Discount Bank of Brazil
discounted cash flow model
discounted cash flow valuation
discounted cumulative gain
discounted optimal policy
discounted reward model
discount factor
discounting principle
discount issue of securities
discount model
discount of negotiable instrument
discount rate
discourse
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