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鰓足類
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鰓足類
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节肢动物门甲壳纲。其鳃生于脚部,故称为「鳃足类」。体型小,约零点二五毫米至十厘米。以细菌、藻类等微小生物为食,有助于使水质澄清。如丰年虫等属之。
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thermionic currents
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thermionic emission current
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thermionic emission microscopy
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更新时间:2025/5/24 3:01:40