牙

METHODS: Human premolars were collected and embedded in paraffin and cut into slices.

目的：研究血管活性肠肽在牙髓牙本质复合体中的表达，探讨其功能。

We drew a conclusion that the change of contents in enamel and crystal orientations and partial decomposition of the organic matrix might be the main reason for enhancing acid resistance.

认为激光对牙釉质表面处理后，牙釉质所含成分的变化和晶柱取向的改变以及有机基质的部分分解是牙齿抗酸能力提高的主要原因。

The average age of first permanent tooth eruption in boys was 2 months later than that of in girls.

第一颗恒牙萌发之平均年龄为6岁又1.6个月，男生第一颗恒牙萌发之时间比女生晚1.6个月。

This study concludes that the first erupted permanent tooth in Taiwanese children is either mandibular incisor or mandibular molar.

本研究显示，恒牙第一大臼齿及下颚门牙有相同的机会成为第一颗萌发出来之恒牙。

OBJECTIVE: To observe structural features of craniofacial hard tissue of permanent tooth occlusal period in the adolescent of Lhasa.

目的：观察西藏拉萨地区藏族恒牙牙合期青少年颅面硬组织结构特征。

If the child's permanent teeth after injuries, tooth injuries completely fell down, if not handled properly at this time would lead to life-long missing and should therefore be calm, back off the teeth.

如果宝宝的恒牙受伤后，受伤的牙齿完全掉了下来，这时如果处理不当便会导致终身缺牙，因此应当保持平静，找回脱落的牙齿。

The function of the space maintainer is to preserve arch length following the premature loss of a primary tooth. The space maintainer allows the permanent tooth to erupt unhindered into proper alignment and occlusion.

空间维持器的主要功能是要在乳牙提早丧失时，能维持牙弓的空间，以提供后续萌发的恒齿能有适当的排列及咬合。

Normal dentin is twice as stiff as pinewood, but damaged dentin is more like rubber, which makes it pretty hard to chew with.

正常的牙本质比松木还坚硬一倍，但是遭到损坏的牙本质却软如橡皮。

A pinprick test was used to measure the duration of topical anesthesia.

用电徨牙髓测试器来测试牙髓的反应。

We all know that plaque is harmful and leads to cavities.

我们都知道，导致蛀牙、牙菌斑是有害的。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐