The exine of pollen wall is of different electron density, the nexine dense and the sexine, comprising tectum, bacules, and foot layer, relatively thin.
花粉壁的外壁分为外层和内层，外层包括覆盖层、基粒棒和基足层等三层，内层只包含一层。
| 单词 | Bacule |
| 释义 |
Bacule
英语例句库
The exine of pollen wall is of different electron density, the nexine dense and the sexine, comprising tectum, bacules, and foot layer, relatively thin. 花粉壁的外壁分为外层和内层，外层包括覆盖层、基粒棒和基足层等三层，内层只包含一层。
英语百科
BaculeIn fortification, a bacule is a kind of portcullis or gate, made like a pit-fall, with a counterpoise, and supported by two great stakes. It is usually made before the corps de garde advancing near the gates. |
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