“Taper” describes how narrow the top of the crown is compared to the bottom.
用“锥形”这个词可以概括出帽顶与底部相比有多窄。
Here's a hat that has no taper. Notice how the crown doesn't narrow as it gets to the top.
这是一个从上到下由窄变宽的帽子。注意看，它是怎样从下往上越来越窄的。
The fiber morphology and pulping properties of narrow-crown Poplar Aigeiros 11 at different ages were studied.
对不同树龄窄冠杨黑11的纤维形态与制浆性能进行了研究。
Crown width would keep slowly growth for the wide-crown species and the narrow-crown species would keep stable growth after mature age.
宽冠型树种树冠在成熟龄后，仍有缓慢生长，而窄冠型树种则保持稳定。
Crown width would keep slowly growth for the wide-crown species and the narrow-crown species would keep stable growth after mature age.
宽冠型树种树冠在成熟龄后，仍有缓慢生长，而窄冠型树种则保持稳定。
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