易于...

The paper consists of four chapters:In chaper 1, we introduce the background and signficance, research and actuality on oscillation of functional partial differential equations; we present research subject in this paper;In chaper 2, we discuss oscillatory property of systems of parabolic differential equations with delays and obtain necessary and sufficient conditions for the oscillation of their solutions; we show the difference between oscillatory property of systems of parabolic differential equations with delays and that of systems of partial differential equtions without delays; we explain the main results with examples;In chapter 3, we discuss oscillatory property of systems of functional parabolic differential equations of neutral type; we obtain some sufficient conditions for the oscillation or full oscillation of their solutions under some conditions; we explain the main results with examples;In chapter 4, we discuss oscillatory property of systems of functional hyperbolic differential equations of neutral type; we obtain sufficient conditions for the oscillation or full oscillation of their solutions under some conditions; we explain the main results with examples.

全文共分四章：第一章简要介绍了泛函偏微分方程的振动的背景和意义、对其研究的简单历史和现状，给出了本文的主要研究对象；第二章讨论了一类时滞抛物方程组解的振动性质，获得了判断其所有解振动的一个易于验证的充要条件；指出了这类具有时滞偏差变元的抛物方程组解的振动性质和不具有时滞偏差变元的抛物方程组解的振动性质的差异；并举例对主要结果进行阐明；第三章讨论了一类中立型抛物方程组解的振动性质，获得了在给定的条件下其所有解振动或全振动的若干充分条件；并举例对主要结果进行阐明；第四章讨论了一类中立型双曲方程组解的振动性质，获得了在给定的条件下其所有解振动或全振动的若干充分条件；并举例对主要结果进行阐明。

False-negative results （ n = 1 ） were caused by extreme hyperkeratosis, and false positive （ n = 4 ） were cases with scarring or inflammation.

特异性为86.7％。假阴性结果（1例）是由重度的上皮过度角化所致；黏膜的炎症充血和瘢痕易于产生假阳性结果（4例）。

It keeps the same when the hypocenter location deviates from the center of the slab.

发现当俯冲板块中存在6%的低速异常时，直达P波和直达S波之间存在波阵面近平面的易于识别的P-S转换震相，其传播方向不因震源位置偏离低速层的中心而改变。

The steady shrinkage of polar ice-caps, as a result of global warming, is making previously inaccessible deposits much easier to get at—and helping to open some formerly icebound shipping lanes.

全球变暖所导致的极地冰帽的持续收缩，正使得先前难以接近的蕴藏更加易于获得——并促进一些此前遭到冰封的海洋航路的开放。

Morphological markers are the traditional markers that have been extensively used for a long time for their facility and identifiability.

形态学标记具有易于识别和掌握、简单直观等优点，在遗传研究和品种选育上有重要的应用价值。

The method is simple,easy to implement and suitable for the study of image motion compensation of space camera system.

实验结果表明，本文提出的方法简单，易于实现，适用于空间相机像移补偿系统的研究。

Imagism is distinguished by its concentration on the hard, verbally created image rather than the translucent symbol.

意象主义以其专注于由严格的词语创造的意象而不是以易于了解的象征为特色。

The resulted alkylated products could be easily recovered due to immiscibility with the ionic liquid, and the catalyst could be repeatedly used.

结果表明，离子液反应体系中存在着烷基化反应与异构化反应两个不同的反应阶段。该体系具有很好的催化性能，而且是常温反应，产物易于分离、纯度高，催化剂可以重复使用。

It can be affected by lots of factors and has low immunogenicity.

此外，间充质干细胞易于外源基因的转染和表达，在细胞治疗和基因治疗中也有着广泛的应用。

The rolled asphalt rock-fill dam with concrete core is one of new impervious structures in the rock-fill dams. It has very high imperviousness with ability to fit the deformation and it is easy to organize the construction.

碾压式沥青混凝土心墙坝是土石坝的一种新型防渗结构，具有防渗性，能好、适应变形能力强、易于施工等特点。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！