网站首页  情感咨询  情感美文  情感百科  情感生活  学习充电  旧版美文

请输入您要查询的词汇:

 

词汇 sphragis
分类 英语词汇 英语翻译词典
释义

sphragis

英汉-汉英词典
n. 封瓣
词组 | 习惯用语
您要查找的是不是:
  • spherical adj. 球的;球面的;球状的
  • dishrag n. 抹布;洗碟用布
  • disparaging adj. 轻蔑的;毁谤的
  • spherics n. 球面几何学;球面三角学;天电学;天电测定

网络短语:
sphragis 碧石; 封瓣;
英语百科

Mating plug

(重定向自Sphragis)
A mating plug in a female Richardson's ground squirrel (Spermophilus richardsonii)
Sphragis on female of Parnassius apollo

A mating plug, also known as a copulation plug, sperm plug, vaginal plug, sement or sphragis, is gelatinous secretion used in the mating of some species. It is deposited by a male into a female genital tract, such as the vagina, and later hardens into a plug or glues the tract together. While females can expel the plugs, the male’s sperm still gets a time advantage in getting to the egg, which is often the deciding factor in fertilization.

随便看

 

依恋情感网英汉例句词典收录3870147条英语例句词条,基本涵盖了全部常用英语单词的释义及例句,是英语学习的有利工具。

 

Copyright © 2004-2024 Yiyi18.com All Rights Reserved
京ICP备2021023879号 更新时间:2025/10/7 16:08:12