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 | electron density |
| 例句 |
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。 声明：以上例句、词性分类均由互联网资源自动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
原声例句
可汗学院：生物化学 Carbon is losing a little bit of electron density. 碳正在失去一点电子密度。 可汗学院：生物化学 The hydrogen is losing a little bit of electron density, therefore becoming partially positive. 氢正在失去一点点电子密度，因此变得部分正。 可汗学院：生物化学 So the carbon's losing a little bit of electron density, and this carbon is becoming partially positive like that. 所以碳失去了一点电子密度，并且这种碳变得像那样部分正。 可汗学院：生物化学 And since electron density is moving away from the carbon, the carbon gets a partial positive charge. 由于电子密度正在远离碳，因此碳会带上部分正电荷。 可汗学院：生物化学 And so the carbon is going to have a little bit more electron density than usual. 因此，碳的电子密度将比平时多一点。 可汗学院：生物化学 And the lithium is losing electron density, so we're going to say that lithium is partially positive. 锂正在失去电子密度，所以我们要说锂是部分正的。 |
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