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古杯纲
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古杯纲
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古杯纲
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古杯纲
多孔动物门(海绵动物门)一纲。又称古杯动物门。
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periodic subgroup
periodic surface
periodic surface calculation model
periodic system
periodic systematic sampling
periodic system of elements
periodic table of elements
periodic term
periodic training principle
periodic trajectory
periodic transformation
periodic treatment
periodic trend
periodic variable
periodic variation
periodic variation of corona
periodic vector
periodic vibration
periodic water flooding
periodic water injection
periodic waveguide
periodic waveguides
periodic zeta-function
period inequality
period integral
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