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Objective:To study the reasons、clinical diagnoses and treatment methods of cracked tooth.

目的 ：探讨牙齿隐裂的的成因、临床诊断方法和治疗措施。

The diagonal form of implicit approximate factorizated NND difference scheme is used to solve the three-dimensional compressible Navier-Stokes equations.

本文采用计算效率较高的标量对角化隐式NND格式，通过求解Navier-Stokes方程对影响再入体表面热流计算准确的诸因素进行了综合分析。

The hidden Markov model based on diagonal covariance matrix Gaussian distributions is at present the most popular and successful model in speech recognition.

状态输出概率密度为对角协方差矩阵高斯分布的隐马尔可夫模型在帧内特征相关建模方面存在缺陷。

Meanwhile, the use of matrix diagonalization in the numerical solution of the problem greatly reduces the CPU time and the storage of computer.

在隐式求解过程中，采用了矩阵对角化算法大大减少了求解方程所需的计算机时和内存，在小型计算机上即可进行。

Based on statistical results and the volcanic lithology and facies map, high cracks surface pore concentrates at diatreme subfacies and cryptoexploisve sub-facies of volcanic conduit facies, inner subfacies of extrusive facies, pyroclastic flow subfacies and base surge subfacies of explosive facies, lower subfacies of effusive facies which are close to the volcanic edifices center. Holes surface pore focus on upper and middle subfacies of effusive facies which locates in the edifice slope.

将物性结果结合平面岩性岩相图，确定出裂缝面孔率高的区域主要集中在火山机构中心附近的火山通道相火山颈亚相和隐爆角砾岩亚相、侵出相内带亚相、爆发相热碎屑流和热基浪亚相、喷溢相下部亚相；气孔面孔率高的区域集中在距离火山口较近的斜坡处，亚相主要为喷溢相上部、中部亚相。

I have shewed thee new things from this time, even hidden things, and thou didst not know them.

从今以后，我将新事，就是你所不知道的隐密事指示你。

Feedback control method is used to solve implicit difference equation in this paper.

提出了采用反馈控制方法求解隐式差分方程的方法。

And with this method, an implicit difference equation for solving the unsteady transonic flow with Euler equations is established.

在此基础上建立了可用于跨音速非定常流动的Euler方程隐式求解法。

In this paper, the idea of that derivative is replaced with difference quotient is involved in calculating each item of Jacobi matrix.

船舶自由浮态计算实质也是求解一个隐式非线性方程组，故同样可用这一方法求解。

After that, the model was applied to continuously differentiable optimization and nonlinear or implicit complementarity problems.

此外，还将所研究的模型应用于闭凸约束极小化问题以及非线性互补问题和隐互补问题中，并通过数值模拟说明了该神经网络方法的有效性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。