英文字典中文字典51ZiDian.com
|
yelk n. 蛋黄;羊毛脂 蛋黄;羊毛脂 Yolk \Yolk\ (y[=o]lk or y[=o]k; 277), n. [OE. yolke, yelke,
[yogh]olke, [yogh]elke, AS. geoloca, geoleca, fr. geolu yellow. See {Yellow}.] [Written also {yelk}.] [1913 Webster] 1. The yellow part of an egg; the vitellus. [1913 Webster] 2. (Zool.) An oily secretion which naturally covers the wool of sheep. [1913 Webster] {Yolk cord} (Zool.), a slender cord or duct which connects the yolk glands with the egg chambers in certain insects, as in the aphids. {Yolk gland} (Zool.), a special organ which secretes the yolk of the eggs in many turbellarians, and in some other invertebrates. See Illust. of {Hermaphrodite} in Appendix. {Yolk sack} (Anat.), the umbilical vesicle. See under {Unbilical}. [1913 Webster] Yelk \Yelk\, n. Same as {Yolk}. [1913 Webster]
请选择你想看的字典辞典:
|
安装中文字典英文字典查询工具!
英文字典中文字典相关资料:
|
中文字典-英文字典 2005-2009