siphuncle / ˈsaɪ fʌŋ kəl /
🎓大学词汇虹膜虹口区虹吸管虹吸效应
siphuncle 的定义
n. 名词 noun- the connecting tube that passes from the end of the body through all of the septa to the innermost chamber.
- Entomology. an aphid cornicle.
更多siphuncle例句
- It is peculiar to the louse tribe (Pediculid), and it consists of the tubulet (Tubulus), and siphuncle (Siphunculus).
- In Ammonoids the siphuncle is always marginal, and usually external.
- The siphuncle in the Nautilus pierces the centres of the septa, and in fossil Nautiloids it is usually central or sub-central.
- Shell straight or slightly curved, with a simple aperture, large terminal chamber and cylindrical siphuncle.
- Shell straight, with wide margina siphuncle, necks produced into tubes fitting into one another.