牙

Through the purification and study of the North China type Permo-Carboniferous biostratigraphic units of Henan Province, 5 fusulinid and 4 conodont biostratigraphic units are collated and stipulated on the basis of the distribution of the fossils in the main section and the Stratigraphic Guide.

通过对河南省华北型石炭纪—二叠纪生物地层单位的清理与研究，根据和牙形石在主干剖面上的纵、横向分布规律，依据地层指南，共厘定出 5个类和 4个牙形石生物地层单位。

The paleochemical characteristics of paleoseawater from the Permian conodont were reconstructed through contrastive researches of REE and Ce anomalies. The resuts show that geochemical characteristics of the conodont may be regarded as a useful proxy to reconstruct the paleoenvironment.

此外，作者对牙形石的稀土元素组成进行了分析，并且发现牙形石的REE组成和Ce异常与古海水氧化还原条件有一定的相关性，可以指示古海水的信息。

The conodont study indicates that the thick carbonate rock strata belongs to the Majiagou Formation of the Middle Ordovician. The Upper part of the formation has the conodont fossil Erraticodon tangshanensis, the lower part is represented by Tangshanodus tangshanensis.

牙形石研究表明这套厚层质纯的碳酸盐岩地层属于中奥陶统的马家沟组，含有上部以Erraticodon tangshanensis为主，下部以Tangshanodus tangshanensis为特征的牙形石。

However,according to the stratigraphic sequence,petrology and conodont revised by An T.X.,the formation may be not the Silurian,while it is the Middle Ordovician correlated to the Badou Member of Fengfeng Formation in North China or partial Yuexian Formation.

李河荣等根据牙形刺将朝鲜半岛太白山盆地的桧洞里组划归志留系，但是从层序、岩石和安太庠修定的牙形刺化石来看，桧洞里组可能不是志留系，而是与中朝地台华北区峰峰组八陡段可比的中奥陶世地层。

In a pelagic chert section at Dachongling of Xiaodong town in the Qinzhou area of southeast Guangxi, we found stratigraphically continuous condont fossils, and divided them into two conodont zones, namely, Jinogondolella granti zone and Clarkina dukouensis zone, in ascending order.

在广西钦州地区小董镇大虫岭深海硅质岩剖面中，首次处理出了层序连续的牙形石化石，并由老至新划分了二个牙形石带，即Jinogondolella granti带和Clarkina ducouensis带。

He sulks when left alone, but pet him ... he wiggles, coos, and sighs happily.

他生闷气孑然一身，但当他…他wiggles宠物，婴儿的牙牙学，叹了口气。

When a tooth is fractured, has a large old filling, or is severely damaged by decay, your dentist may recommend the placement of a crown or cap.

如果您的牙齿裂开、有一个很大的填充体或者因龋齿而严重受损，您的牙医可能建议您安装牙冠或牙套。

Methods: A tentative discussion on 19 patients with overlay abutment covered with metal crown cap, and the dentition defects of a few missing of upper teeth and serious defects of lower teeth in restoring of mandible complete denture was made.

通过对19例患者覆盖基牙作金属顶冠、下颌全口义齿修复上颌牙齿少量缺失，下颌牙齿大量缺失的牙列缺损问题进行了初步探讨。

Objective:To observe the clinical results of the post surgical crown lengthening for different cases of teeth with subgingival destruction.

目的：观察牙体缺损不同部位牙冠延长术后的疗效。

Methods Among 27 cases who perform cosmetic prosthesis for anterior tooth after crown lengthening, there are 16 cases with post crown,11 cases with comprehensive prosthesis.

对27例行牙冠延长术的患者进行常规的前牙美容修复，其中16例采用单纯桩冠修复，11例采用综合法进行美容修复。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。