| 单词 | sieve tube |
| 释义 | sieve tubenoun Botany.a vertical series of sieve cells in the phloem, specialized for the conduction of food materials. a single sieve cell. Origin of sieve tubeFirst recorded in 1870–75 Words nearby sieve tubesieve cell, sieve graft, sieve of Eratosthenes, Sievers, sievert, sieve tube, sieve-tube element, Sieyès, sif, sifaka, Sifrei Torah Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for sieve tubesieve tube nounbotany an element of phloem tissue consisting of a longitudinal row of thin-walled elongated cells with perforations in their connecting walls through which food materials pass Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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