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chemical reagent industry
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chemical reagent industry
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chemical reagent industry
化学试剂工业
为国民经济各部门提供多种化学试剂与制剂、工业用纯原料和特种功能材料、高纯和特纯化学品的精细化工。
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effective derivation
effective descriptive set theory
effective diameter of objective
effective Diophantine approximation
effective discharge
effective distance
effective divisor
effective domain
effective dose
effective elastic thickness
effective enumeration
effective equivalent dose
effective equivalent dose rate
effective error mean square
effective field
effective field theory
effective filter response
effective filtration pressure
effective flow resistance
effective f-number
effective focal length
effective focal spot
effective focus length
effective formal deformation
Effective Formulae Handed Down for Generations
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