英语词汇“sieve tube”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

sieve tube

noun Botany

A series of sieve tube elements placed end to end to form a continuous tube.Resistivity dramatically increases at the end of each sieve tube when passing through the pores, and it is unlikely that this effect could be described by a simple equation for the pathway from source to sink compartments....

Other components, such as sieve tubes and parenchyma cells, are not efficient axial light conductors.
Inside the phloem, it seems to be a common feature that companion cells are the principal receivers of the translocated photosynthates from the shoot through sieve tubes.

单词	sieve tube
释义	sieve tube noun Botany A series of sieve tube elements placed end to end to form a continuous tube.Resistivity dramatically increases at the end of each sieve tube when passing through the pores, and it is unlikely that this effect could be described by a simple equation for the pathway from source to sink compartments.... Other components, such as sieve tubes and parenchyma cells, are not efficient axial light conductors. Inside the phloem, it seems to be a common feature that companion cells are the principal receivers of the translocated photosynthates from the shoot through sieve tubes.
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