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phloem n. 韧皮部 韧皮部 phloem n 1: (botany) tissue that conducts synthesized food substances (e.g., from leaves) to parts where needed; consists primarily of sieve tubes [synonym: {phloem}, {bast}] Phloem \Phlo"["e]m\, n. [Gr. ? bark.] (Bot.)
That portion of fibrovascular bundles which corresponds to the inner bark; the liber tissue; -- distinguished from {xylem}. [1913 Webster]
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