所有科技知识-科学时代

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。

opportunity cost	opportunity cost	opportunity cost	opportunity cost	opportunity cost
opportunity cost	opportunity cost	opportunity cost	opportunity cost	opportunity cost
opportunity cost	opportunity cost	opportunity cost approach to international trade	opportunity cost of capital	opportunity cost of money holding
opportunity explorer	opportunity explorer (OE)	opportunity explorer--opportunity explorer (OE)	opportunity for fighting	opportunity fund
opportunity identification	opportunity identification	opportunity loss	opportunity structure	opportunity study
opportunity-threat matrix	opportunity to perform	opposable thumb	opposed crossing	opposed firing
opposed landing	opposed multiblade damper	opposed-piston horizontal compressor	opposed replenishment	opposed shutter
opposed wave	opposing aircraft	opposing artillery	opposing camp	opposing camp
opposing e.m.f.	opposing part	opposite	opposite	opposite acting force
opposite algebra	opposite angle	opposite angles	opposite bud	opposite category
opposite category	opposite channel	opposite corner	opposite direction	Opposite Editorial page（Op-Ed）
opposite electricity	opposite flanks	opposite inference	opposite judgement	opposite judgement inference
opposite leaf	opposite leaf	opposite leaf method	opposite parity	opposite phase
opposite phase	opposite phase	opposite phase	opposite phyllotaxy	opposite-pinnate
opposite polarity	opposite pressure	opposite prompt	opposite prompt door	opposite prompt door--opposite prompt door（OPD）
opposite prompt door（OPD）	opposite prompt--opposite prompt（OP）	opposite prompt（OP）	opposite scenery	opposites drill
opposite sex	opposite side	opposite side of an angle	opposite spins	opposite spray
opposite state	opposite swirl burner	opposite term	opposite term	opposite torque
oppositifolious	opposition	opposition	opposition	opposition
opposition	oppositional allele	oppositional culture	opposition method	opposition of a deontic proposition
opposition of a discriminate judgement	opposition of mental labour to manual labour	opposition of town to country	opposition party	oppositipetalous
oppositisepalous	oppressing stratum	Oprah Winfrey	Oprah Winfrey Show	OP riots
O-proposition	opry-house	opsearch	opsimath	opsimiolithic culture
opsin	opsin	opsin	opsiuria	opsoclonia
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