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某个性状或生物类群的现存后裔来自不同的最近共同祖先或一个以上的独立演化事件。
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preoxidation
pre oxidizing agent
pre-oxidizing agent
pre packing dimension
pre-packing dimension
prepacking dimension
preparacompactness
preparating lemma
preparation
preparation and approval of recent construction plan
preparation design
preparation for a crime
preparation of aluminum by aluminum amalgam
preparation of amorphous silicon
preparation of cement raw meal
preparation of ceramic matrix composites by sol-gel processing
preparation of ceramic matrix composites from polymeric precursors
preparation of Chinese medicinals
preparation of chiral drug
preparation of colloid
preparation of materials under high pressure
preparation of polysaccharide drug
preparation of semiconductor thin films
preparation of zirconium tetrachloride
preparation process of polymer mother liquor
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