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The model of a standard maxillary central incisor restored with cast post and porcelain crown was constructed through three dimensional finite element methods .

运用三维有限元法构建解剖标准前牙桩冠修复体模型，并模拟不同牙合接触形式进行加载以分析剩余牙本质应力。

Methods Four three-dimensional finite element models were constructed by the data of spiral CT:1Mandibular second premolar restored directly by full crown;2Fill the perforating cavity with resin material and full crown restoration;3Cast nickel chromium alloy post core plus full crown restoration;4Fiber post and resin core plus...

方法采用螺旋式CT扫描获取数据，建立下颌第二前磨牙4种情况下的三维有限元模型：1直接全冠修复；2用树脂材料充填开髓洞形后全冠修复；3铸造镍铬合金桩核与全冠修复；4纤维桩树脂核与全冠修复。

Cryptanalysis is the base of information security, and all applications are constructed on it.

但是这也带来信息的安全性问题。

In this paper, the application of sun-blind-region ultraviolet spectrum in short-range cryptical communication is discussed, and an experimental system of ultraviolet communication is constructed.

本文对紫外日盲区光谱在近距离、保密通信中的应用进行了探讨，并建立了紫外光学通信原理实验系统。

Due to the absorption of ozonosphere existing in near-ground atmosphere, the transmission distance is limited in a shorter range, therefore a shortlegged, cryptical, safe and antijamming communication system is constructed, and the conventional antenna is not needed.

由于近地表大气臭氧层的吸收，所以传输距离被限制在一个较小的范围内，构成了短距离的、秘密的、安全的和抗干扰的通信系统，并且不需要传统意义上的天线。

He ran over the violent speech the cub reporter had constructed for him, and, though at first he was angered by the fabrication, in the end he tossed the paper aside with a laugh.

他匆匆读完了那半瓶醋记者为他编造的激烈言论，虽然开始时很为那胡编乱造生气，后来却只笑了一笑便把那报纸扔到了一边。

A rational cubic interpolating spline based on function values and with quadratic denominators is constructed.

构造了一种基于函数值的分母为二次的C1连续有理三次插值样条。

With the same method, cDNA of esterase A2 was cloned from Culex quinquefasciatus, and its expression plasmid was constructed subsequently.

使用同样的方法，从抗性蚊虫中克隆并表达了酯酶A2。

And few want to work wearing awkward lead aprons and vests( costing between$85 and$600), which are typically constructed of weighty, cumbrous sheets of powdered lead in a polymeric matrix.

外，也很少人愿意穿著笨重的铅制背心与围裙工作，这类装备的售价介于85~00美元，由填装著铅粉的厚重聚合物材质所制成。

A 2D harmonic model based on the quaternion was constructed,and a special four-order cumulant was defined.

构造了合适的基于四元数的二维谐波模型，根据此模型定义了特殊的四阶累积量切片，分析了加性高斯在有色噪声中的二维三次非线性相位耦合。

I had a lovely dog named PiPi, he was one of my best friends.

我曾经有过一只小狗，它的名字叫皮皮，它很善良，它是我最忠实的朋友。

Newly ovulated mouse oocytes were cultured in the CZB medium supplemented with different concentrations of pyruvate before treated for activation or assayed for MPF activity.

我们猜测卵母细胞在不含丙酮酸的条件下老化的更快，并且卵丘细胞可能通过消耗不含葡萄糖的CZB中的丙酮酸从而促进卵母细胞老化。