边界

The full space calculation model, which suits for the asymmetric structure sometimes even including air below the surface of medium, can enable simulative result to approach real one. The FDTD algorithm based on the mixed ABCs is proper to calculate the transmission line where the electromagnetic wave is transmitted in order to send electromagnetic energy along central conductor. The calculation efficiency will be raised if the PML absorbing boundary condition is set on both planes of transmitting direction and so is the MUR two-order absorbing boundary condition in the other planes.

全空间计算模型是适合所有的不对称结构的待研究体的，而且包括了介质下面的空气部分，使仿真更加的接近实验真实情况；基于MUR-PML混合吸收边界条件的时域有限差分法非常适合计算传输线这种结构，因为传输线是传送电磁波的，电磁能量主要是沿着中心导带行进，因此在两个传输端面上设置PML完全匹配层吸收边界条件，在其他面上设置MUR二阶吸收边界条件，会大大提高计算效率，而且计算结果与XFDTD仿真软件计算结果相比较，基本趋于一致。

In the third part, we discuss a simple class of Sturm-Liouville problems with Dirichlet boundary condition in the first boundary condition and an affine function in the second one.

第三部分我们讨论了一类参数边界条件的Sturm-Liouville问题，其第一边界条件为Dirichlet条件，第二个边界条件为特征值参数的线性函数。

In eight directions chain code border tracking code, which is stored in an array of border points vector direction, Storage is the boundary point coordinates.

于八方向链码的边界跟踪代码，其中数组存储的是边界点的矢量方向，存储的是边界点的坐标。

In eight directions chain code border tracking code, which is stored in an array of border points vector direction, Storage is the ...

于八方向链码的边界跟踪代码，其中数组存储的是边界点的矢量方向，存储的是边界点的坐标。

In this paper the defect of the traditionary boundary layer methods (including the method of matched asymptotic expansions and the method of Visik-Lyusternik) is noted, from those methods we cannot construct the asymptotic expansion of boundary layer term really.

本文指出传统的边界层方法包括匹配法和Vi(？ik—Lyusternik方法的不足：不能作出边界层项的渐近展开式。提出多重尺度构造边界层项的方法，得到符合实情的结果。

For 21 cases of thyroid malignant nodule, 17 showed untidy margin and clear borderlines were detected in 4 cases; 8 cases had vesica and 9 had calcification; 6 cases showed no complete enhanced ring around the tumor, and 7 cases were revealed metastatic lymphadenopathy on the neck.

结果 47例单发良性结节中39例病变边界清晰、8例病灶边界欠清、26例囊变、10例钙化；21例恶性结节有17例病变边界不清、4例病灶边界较清、8例囊变、9例钙化、6例表现强化残圈征、9例肿瘤侵犯周围组织器官和7例颈部淋巴结转移。

Moreover, it indicates that the error is reduced with the increase of the exponent number of the Asymptotic Boundary Conditions. In the third chapter, based on the Laplace equation, the limitation of the variation methods are deduced from the process proving the operator to be self-adjoint and positive definite.

针对二阶渐近边界条件中含有微分项的情况，第三章研究了基于变分的有限元方法对边界条件的限制，提出对所适用的边界条件的要求，从而说明针对二阶渐近边界条件问题可以采用迦辽金有限元方法。

The energy minimisation method used here is different from that usually taken by other authors in some respects.

本文用计算机制作的模拟Ni_(64)B_(36)非晶态合金的结构模型作为初始位形，分别在自由边界、固定边界、周期边界和准动态平衡边界条件下，用不同于以往的松弛方法进行了能量极小化计算。

Firstly, prosodic boundaries of 1991 common sentences were labeled based on speech perception experiment, relation between prosodic structure and syntactic structure was examined after immediate constituent analysis, an example of prosodic phrasing from text sentences was provided using CART. Then, using designed sentences, phenomena of downstep and declination in pitch downtrend of Chinese declarative sentences were examined, commonness and speciality of Chinese intonation were discussed.

中文摘要针对韵律短语切分问题，本研究首先基于语料库语言学的研究方法，对语料库中具有不同句法结构和韵律结构的1991个汉语常用句，进行了以语音感知为基础的韵律边界标注；对语料文本进行句法分析后，得到了各级韵律边界和句法边界的相互关系；并使用CART决策树对韵律短语边界进行了切分实验。

Results indicate that the observed salt fluxes under the two wind conditions show a marginal difference. Under the steady wind condition, a DBL with a constant thickness of 3.5 cm is observed right above the deposited sediment. The molecular diffusion is found to be the dominant mechanism for salt transport within the DBL. The latter can suppress the hydrodynamic enhancement on the exchange of substances between deposited sediments and overlying water.

研究结果表明，在稳定风场条件下，沉积物－水界面处存在厚度约3.5cm的扩散边界层，有风条件下的界面盐分交换通量略大于无风时的通量；分子扩散是边界层内盐分运移的主要机制，扩散边界层对沉积物盐分释放具有阻滞作用，并且边界层越厚，阻滞效应越显著。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。