知识贝壳
知识贝壳
所属栏目：英汉双解生物学
The fourth and last region ofthe specialized stomach of ruminants (e.g.the cow). It is lined with normal mucosacontaining gastric pits,producing hydrochlo-ric acid,pepsin,and rennin,and is the truedigestive stomach.反刍动物(如牛)特有的最后一个胃,即第四胃。它有正常的凹形的黏膜 ......（本文共 248 字 ） [阅读本文] >>