肛尾的

In normal rat embryos, on gestational days 14.5 to 15, cellular apoptosis takes place in the tail groove and dorsal cloacal membrane which makes anal membrane rupture, and then rectum exposes to outside.

正常胎鼠在胎龄14.5天-15天时，尾沟、背侧泄殖腔膜处出现大量的细胞凋亡，使肛膜破裂，直肠与外界相通。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。