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科学时代收录了1160609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。

opera opera Opera opera and ballet theatre opera-ballet
operability operability study operable land operable timber opera buffa
opera cake opera chair opera citato (op.cit.) opera composer opera film
opera glasses opera glasses opera glasses operagoer operagoer
opera house opera house opera house opera institute opera librettist
opera lyrique operameter operand operand operand
operand operand operant aggression operant behaviour operant behaviour
operant conditioned reflex operant conditioning operant conditioning operant conditioning operant conditioning
operant conditioning operant goal operant learning operant theory operant therapy
opera on-film opera-oratorio opera overture opera regia opera semiseria
opera semiseria opera seria opera seria opera singer operate
operated shellfish operatic operatics operating operating
operating account operating activity operating agreement operating aircraft operating altitude
operating assets operating authority operating base operating basis earthquake operating budget
operating budget operating budget operating budget operating budget operating budget
operating budget operating capacity operating capacity operating capacity operating capacity
operating capacity maintenance concept operating capital operating capital operating cash flow operating cash flow
operating characteristic operating characteristic operating characteristic operating characteristic curve operating characteristic curve--operating characteristic curve(OC curve)
operating characteristic curve(OC curve) operating charge operating chart operating circuit for light source operating condition
operating condition operating condition of test operating cost operating cost operating cost
operating cost operating cost operating cost operating cost operating costs
operating current of gyroscope motor operating cycle operating cycle operating cycle operating decision making
operating earning rate operating earnings operating effectiveness operating efficiency operating environment
operating expense operating expense operating expense operating expense ratio operating expense ratio
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