起源于

Consisting of fibrous tissue covered by an elastic membrane, the tumor is covered by the endocardium.

乳头状弹力纤维瘤是起源于心内膜的一种良性肿瘤，通常生长于心脏瓣膜上，且发生于瓣膜的心室面。

The endophyte is surrounded by a membrane of apparent host plant origin .

内生植物是明显地被起源于寄生植物的膜包围的。

The trouble is that if the genetics researchers are right, these modern groups did not actually originate in the Eocene.

现在的问题是--如果遗传科研人员的论断正确无误，那么现存的哺乳动物群就不是起源于始新世时代了。

The hard outer ring originates either from the epicarp or from noncarpellary tissues of the plant.

坚硬的外表起源于外果皮或植物的非心皮组织。

Feeling, however that as a simple layman he could not well confer missionary powers, he took orders at Tübingen in 1734 and, moreover, received episcopal consecration from the Reformed court-preacher Jablonsky of Berlin, in whose family the Moravian episcopacy, originated in 1467 by a validly ordained Waldensian bishop, had been - or was said to have been - preserved.

感觉，但作为一个简单的外行人，他不能好赋予的权力，传教，他听命于蒂宾根在1734年，而且，收到主教consecration从改革法院布道者jablonsky的柏林，在其家人的摩拉维亚之故，起源于1467年由具有法律效力的waldensian祝圣主教，已经-或者是说已经-保存。

Thus we find that they, too, arise from an epithelium.

因此我们发现，它们也起源于上皮组织。

Histologically, 95% of ovarian cancers arise from the ovarian surface epithelium.

组织学研究表明95%的卵巢癌起源于卵巢表面上皮。

There is a possibility Homo erectus originated in Eurasia and it's not impossible to think they spread back to Africa.

有直立人可能起源于欧亚大陆，这并不是不可能的，相信他们是后来传回非洲的。

What we are finding changes this. The question is whether the origin of Homo erectus is in Africa or Eurasia?

我们发现这种变化存在的问题是，是否直立人起源于非洲或欧亚大陆？

Results Among the 15 cases, the lesions occurred in ethmoid sinus in 6 cases, in frontal sinus in 4 cases, in sphenoid sinus in 3 cases, in frontal hone in 1 case and in frontal process of maxila in 1 case.

结果 15例中病变起源于筛窦6例，额窦4例，蝶窦3例，额骨、上颌骨额突各1例；10例首发病例多呈卵圆形，形态规则，5例复发病例中4例形态不规整。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。