Phragmocone

Cutaway of a nautilus shell showing the chambers

The phragmocone is the chambered portion of the shell of a cephalopod. It is divided by septa into camerae.

In most nautiloids and ammonoids, the phragmocone is a long, straight, curved, or coiled structure, in which the camarae are linked by a siphuncle which determines buoyancy by means of gas exchange.

单词	phragmocone
释义	phragmocone /'fræɡməkəun/ 英汉-汉英词典 n. (软体动物的)闭锥词组 \| 习惯用语您要查找的是不是： gramophone n. 留声机 diaphragmatic adj. 横隔膜的,隔膜的 phragmocone n. 叠锥；[无脊椎] 闭锥；迭锥；[古生] 气壳原声例句 PBS地球-动物趣闻 This development of a gas-filled, chambered shell, also known as a phragmocone, was a triumphant, history-making adaptation. 这种充满气体的腔壳（也称为 phragmocone）的开发是一项成功的、创造历史的改编。 PBS地球-动物趣闻 While the old gas-filled phragmocone couldn't withstand the pressure of the deep ocean, the gladius had no such problem. 虽然旧的充气 phragmocone 无法承受深海的压力，但 gladius 没有这样的问题。英语百科 Phragmocone The phragmocone is the chambered portion of the shell of a cephalopod. It is divided by septa into camerae. In most nautiloids and ammonoids, the phragmocone is a long, straight, curved, or coiled structure, in which the camarae are linked by a siphuncle which determines buoyancy by means of gas exchange. 近义、反义、联想词近义词 n. shell
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phragmocone /'fræɡməkəun/

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Phragmocone

近义词