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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。

first auxiliary view first axiom of countability ; first countability axiom first bath first beat first beneficiary [of a transferable credit]
first block number first body First Bond first bond first boot sequence
first boundary value first boundary value problem first bower first branchial arch complex defects first break
first breaker card first Brillouin zone first byte first call first call resolution
First carpal bone first carpometacarpal articulation first carrier first category first certificate examination
first character first character forms control first check character flipflop first chief (first support team chief) first choice
first choice circuit first choice cocoon first choice route first circulation first class
first class cabin first-class cabin first class conductor first-class fishing port first class gunner
first class insulated wire first class lever FIRST CLASS LEVER first class line first class module
first-class ore first-class radio electronic certificate First-class standard first cleavage first closure
first coat first coat of paint first-collision dose first collision kerma first colour down
first-come first-serve first come first served first-come first-served first come first served (FCFS) first come first served{=FCFS}
first-come first-served (FCFS) first come first served policy first-come first-served rule first come first served schedule first component
first computer first computer inquiry first contact First convoluted tubule first coordination sphere
first copy-out time first core first cosmic velocity first cost first cost,original cost
first cousin first cover first cover sheet first critical experiment first critical speed
first crop first cross First cuneiform first curvature first curvature vector
first customer ship first cut first-cut-linters First cutting for regeneration first defense gun
first-degree atrioventricular block first degree burn first-degree price discrimination first-degree skin burn first derivation
first derivative first destination first detector first difference first digit distribution
first division first division segregation first dog watch first dormancy first-dose response
first drawing frame first driver first drop first eccentricity first echelon
first echelon decontamination first echelon maintenance first echelon maintenance service first echelon of command first echelon (supply)
first echelon tool first edition first effect evaporator first element of chain first emptiness
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