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科学时代收录了3405121条科普词条,基本涵盖了常见科普常识及英语词汇的翻译,是科学学习和研究的有利工具。

free anemophily free angle free antigen free appropriate public education free aquifer
Free Area free area free area list free area / paid area free area routine
free article free ash free assembly free asset free association
FREE ASSOCIATION Free Association free associative algebra free at dock free atmosphere
free atom free-atom cross-section free-atom scattering cross-section free auxin free available residual chlorine
free balloon free balloon concentration ring free balloon net free band of colon Free banking system
Free base free base form free beam free bend free bend test
free Berkeley software / standard distribution freebie free block free block control table{=FCT} free block list
free block queue element free board freeboard freeboard assignment freeboard calculation
freeboard deck freeboard depth freeboard exceedance frequency freeboard length freeboard mark
freeboard rule freeboard zone free boat free body free-body diagram
free body diagram free body principle free-body principle free body sketch Free bond
free Boolean algebra Free border Freeborn free boundary free-boundary flow
free boundary layer free boundary problem free-bound [electron] transition free-bound transition free breathing transformer
FreeBSD FreeBSD系统 FreeBSD系统 free bulwark Freeburg
free burning free-burning arc free-burning coal free burning coal free burning mixture
free bytes free calcium oxide in fly ash free camber free canon free canopy
free capacity free carbon free carbon dioxide free carboxyl free carrier
free carrier absorption free-carrier density Free carrier plasma Free carrier recombination Free carrier screening effects
free cash flow free cash flow {=FCF} free cell free cell formation free cementite
free-center-type clamp free central placenta free-central placentation free central placentation free chain
free charge free charge carrier free charge weight free cheek free chlorine
free choice feeding free choice net free cinema free circuit free close
free code Free coinage free combination free component free condition
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