| 单词 | phloem ray |
| 释义 | phloem ray in American English the portion of a vascular ray in a stem which traverses the phloem phloem ray in American Englishnoun Botany a vascular ray extending into or located entirely within the secondary phloem Word origin [1870–75]This word is first recorded in the period 1870–75. Other words that entered Englishat around the same time include: Mafia, billing, fifth wheel, giveaway, washout |
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