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硬锰矿
释义
硬锰矿
Encyclopedia
理学
氢氧化物矿物
释
psilomelane
硬锰矿
氢氧化物矿物。化学成分变化很大,大致为Ba(Mn2+)(Mn4+)8O16(OH)4或(Ba,H2O)2Mn5O10。
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sexual morality
sexual motivation
sexual orientation
sexual partner
sexual partners exchange,swinging
sexual physiology
sexual polymorphism
sexual polyploidization
sexual protection of minors
sexual reflex
sexual reproduction
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sexual selection
Sexual Selection in Rodents
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sexual total outlet
sexual transmission
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sexual willingness
sexupara
sex work
sexy primes
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