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Tumor morphology was analyzed by hematoxylin and eosin and modified periodic acid-Schiff staining.

用苏木素、伊红和过碘酸－希夫染色法进行肿瘤形态学分析。

In the SIRS epidemical models with impulsive vaccinations, we prove the existence and global stability of the disease-free periodic solution.

对脉冲预防接种的SIRS流行病模型，证明了无病周期解的存在性和全局渐近稳定性。

At the beginning of this paper we are devoted to studying the equicontinuity on the set of periodic points. Later we are researching on the property of the invariant set and measures dimension of the self-similiar IFS.

本文前面一部分主要着眼于连续映射在其周期点集上的等度连续性的研究，后面一部分主要涉及到相似迭代函数系统不变集性质和测度的维数的研究。

In chapter two, by studying the properties of self-maps on trees, we obtain five necessary and sufficient conditions for the product self-maps on trees which have the property of equicontinuity on their sets of periodic points, i.e.

第二章通过对树上连续自映射性质的研究，给出了树上乘积自映射在其周期点集上等度连续的五个充要条件，即定理2.3.1，定理2.3.2，定理2.3.3和定理2.3.4。

A big part of this thesis discusses the detection and parameter estimation of periodic components with several algorithms.

本文主要内容是讨论几种经典算法对周期信号的检测和参数估计。

Based on density functional theory calculation with periodic boundary conditions, the possibility of the direct coupling of methanol into ethene by oxonium ylide mechanism was investigated.

采用基于周期性边界条件的密度泛函理论研究了HSAPO-34分子筛上甲醇通过氧鎓叶立德机理直接耦合生成乙烯的可能性。

Some sufficient conditions of the existence and uniqueness of the periodic solutions are obtained.

研究了一阶非线性泛函微分方程的周期解，得到了周期解存在唯一的一些充分条件，推广和改进了已有的结果。

And the sufficient conditions for the existence and stability of semi-trivial periodic solution and positive period-1 solution were obtained.

并得到了半平凡周期解和正周期1解存在和稳定的充分条件。

Furthermore the existence theorem of periodic solutions was obtained by using Liapunov center theorem, and an example was presented to illustrate the results.

利用Liapunov中心定理，进一步得到了周期解的存在性定理，并举例说明结果的应用。

In this Paper, the author proved the theorem: Let fbe an nonconstant periodic function of exponential type and positive lower order , and g be an entire function of finite order If g is permutable with f, then g≡for gz

本文证明了如下定理：设 f为非常数指数型周期函数，且具有正下级，g为有穷级整函数。若 f与g可交换，则 g≡ f或 g≡ z

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。