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单词 sieve tube
释义

Definition of sieve tube in English:

sieve tube

noun
Botany
  • A series of sieve tube elements placed end to end to form a continuous tube.

    〔植〕筛管

    Example sentencesExamples
    • In the beans, the needle-shaped protein complexes are situated in so-called sieve tubes, where they control the plant's flow of sugar-bearing fluid.
    • 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.
    • The sap is well protected from herbivores by a thick layer of bark, and by an injury-induced response that releases proteins to prevent continued bleeding from injured sieve tubes.
    • 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.

Definition of sieve tube in US English:

sieve tube

noun
Botany
  • A series of sieve tube elements placed end to end to form a continuous tube.

    〔植〕筛管

    Example sentencesExamples
    • In the beans, the needle-shaped protein complexes are situated in so-called sieve tubes, where they control the plant's flow of sugar-bearing fluid.
    • 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.
    • 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.
    • The sap is well protected from herbivores by a thick layer of bark, and by an injury-induced response that releases proteins to prevent continued bleeding from injured sieve tubes.
    • Other components, such as sieve tubes and parenchyma cells, are not efficient axial light conductors.
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更新时间:2025/6/19 15:32:41