冠

The theory and methods of CAD for three-unit fixed partial dental prosthesis crown bridge are studied, which is based on the design technology of single dental prosthesis crown bridge design. An integrated route of the design of crown bridge is put forward.

本文在基于特征的义齿单冠设计技术基础上，针对三单元固定冠桥的计算机辅助设计理论与方法进行了探索，形成了一套完整的冠桥设计路线。

The crown fractures included partial crown split and full-crown fractures.

冠折包括部分冠折裂、全冠折断。

Golden-crowned kinglets tolerated colder temperatures in helox than ruby-crowned kinglets, and this difference was not a function of mass or thermal conductance, as these did not vary significantly between species. Msum in golden-crowned kinglets (2.51 ml±0.32 ml O2min-1, n=11) was significantly greater than that in both male (2.27 ml±0.25 ml O2min-1, n=13) and female (2.05 ml±0.18 ml O2min-1, n=13) ruby-crowned kinglets, suggesting that metabolic differences may account for differences in cold tolerance.

结果显示：金冠戴菊对低温的耐受能力高于红玉冠戴菊，由于金冠戴菊和红玉冠戴菊的体重和热传导差异不显著，表明对低温的耐受能力的差异不是体重和热传导引起的；而金冠戴菊的最大代谢产热(2.51 ml±0.32 ml O2min-1， n=11)明显高于雄性(2.27 ml±0.25 ml O2min-1， n=13)和雌性(2.05 ml±0.18 ml O2min-1， n=13)的红玉冠戴菊，表明最大代谢的差异可能导致对寒冷的耐受能力不同。

Methods: Two hundred fifty five ill teeth of one hundred twenty three patients were veneered aesthetically, jacket crown, dowel crown, fixed bridge prosthesis by using Germany new type of restorative material Artglass.

应用无金属基底冠的Artglass前牙美容修复技术对123例患者255颗患牙进行美容贴面、全冠、桩冠、双端固定桥修复治疗。

Well worth mentioning BE, gold leaf metal alloy and hat color inside the gold deposition and tooth essence color are close, therefore the beautiful effect of the repair body wants to surpass titanium metal alloy and roast a porcelain hat;But because titanium metal specific weight is smaller, the titanium metal alloy roasts the weight of porcelain hat obviously and a little bit lightly, suitable for empress many units of the tooth roast porcelain bridge repair.

值得一提的是，金铂合金与金沉积内冠颜色与牙本质颜色接近，因此修复体的美观效果要优于钛合金烤瓷冠；但由于钛金属本身比重较小，钛合金烤瓷冠的重量明显较轻，适合于后牙的多单位烤瓷桥修复。

In order to investigate therelationship between macrocyclic ligands and rare earth ions, wehave synthesized two new Schiff-base crown ether, two newdiaza-crown ether ligands and their rare earth complexes in thisdissertation. These complexes have been characterized byelemental analyses, IR spectra,〓 NMR spectra, thermalanalyses and molar conductivity measurement, we investigatedtheir ability to form coordination compounds and theircompositions and properties.

为了进一步研究和探讨冠醚配体对稀土元素的配位作用，论文首次报道了两个新希夫碱冠醚、两个新双氮杂冠醚及它们的稀土配合物的合成，并通过元素分析、热分析、核磁共振氢谱、红外光谱及摩尔电导测定，研究了配合物的组成及性质。

There are two kinds of article: the definite article the,and the indefinite article a or an.

冠词有两种：定冠词the 和不定冠词 a 或 an。

Activity 2 Complete the description of the film below with the definite, indefinite or zero article.

为下面的电影介绍补充所需的定冠词、不定冠词或零冠词。

13There are in English two articles: the definite article and the indefinite article.

英语中有两个冠词，即定冠词和不定冠词。

There is a bit of similarity between definite article and zero article , though.

零冠词并非是冠词的省略，在语法上也属于冠词的一种。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失