bract scale

常见例句

双语例句

• There was no inverted vascular bundle developed in the bract scale of Thuja occidentals.
  崖柏属雌球果的苞鳞中没有倒转的维管束形成。
• In Calocedrus and Platycladus, only a single series of inverted vascular bundles were generated in the adaxial side of the bract scale;
  在苞鳞中只形成一组倒转的维管束，如侧柏属和翠柏属；
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