有...条件

In this paper, one sufficient condition for the global asymptotical stability of the three-dimensional cooperative system is derived using the nonpositive divergence and the properties of monotone flow.

利用非负散度和单调流性质推导出三维合作系统全局渐近稳定的充分条件，并将该条件应用到一些具体的三维合作系统系统的稳定性判定中，所得结果说明了Hirsch所提出的猜测的正确性，同时推广和改进了相关文献的已有研究成果。

Under the conditions of Ambrosetti-Rabinowitz type superlinear and odd duality, we show that the systems have at least one nontrivial solution and infinitely many solutions.

在Ambrosetti-Rabinowitz型超线性条件及具备奇对偶性条件下，得到了方程组分别有一个解及无穷多个解的存在性结果。

In this thesis, some theories and approaches related to continuous dynamics, discrete dynamics, impulsive dynamics, operator theory and numerical simulations are used to investigate dynamical behaviors including the existence and globally asymptotic stability of periodic solutions, permanence, extinction, and all kinds of complexities, and meanwhile the possible effects of delay and impulse on the dynamical behaviors are discussed.

我们的这些结果显示出这三个时滞周期系统正周期解存在且全局渐近稳定的充分条件在形式上几乎能够很好的与相应的无时滞自治系统正平衡态存在且全局渐近稳定的充分条件相对(来源：A5babBC论文网www.abclunwen.com)应，这些结果也显示了时滞对系统正周期解的存在性和全局渐近稳定性是有影响的，它们推广并改进了一些已有的相关结果。

After cultivated, tube plantlets weren't evidently different compared with the control (inoculated under no NaClO, free virus conditions) in main growth indexes,which showed that Oncidium' s tube plantlets could be inoculated under open conditions when film culture vessels were used.

培养后的试管苗在主要生长指标方面与对照(不添加NaClO、无菌条件下接种)相比无明显差异，表明采用树脂膜培养容器可以在有菌条件下进行文心兰试管苗的接种。

Mycorrhizal spores in most rhizospheric soil of weed species, except Vida cracca, TrfoHum npens and Oxalis cornculata, decreased significantly. 2 Influence of coexisting of various plant species on AMF colonization in Pb polluted soil Comparing with monoculture,the results showed mat diversity did not affect on die AMF colonization of weed plants planted in soil at the concentration (334.5251mg/kgsoil or nonpolluted soilsignificandy.In the experiment of species combination with Trfolium repens, Lolium perenne, Poa annua, Plan tago virginica, the infection rate of all species increased in Pb treatment except Poa annua, implying that diversified plant species coexistence may alleviate the impacts of Pb on mycorrhizal colonization.

铅污染土壤条件下不同植物物种互作对菌根的影响通过盆栽加铅模拟试验，在铅污染(334.5251mg／kg土)的土壤中，黑麦草、早熟禾、白车轴草和北美车前无论是对照还是铅处理，多植物物种共存组合中的杂草菌根侵染率与单个物种相差不大，AMF菌根侵染率的处理间差异的变化趋势在铅污染的土壤和对照土壤条件下表现一致，但铅处理与对照相比，除了早熟禾外，菌根侵染率均升高，说明杂草多样性对菌根有一定的保护作用。

Most doctors, including dermatologists and psychiatrists, regard Morgellons as a manifestation of known medical conditions, including delusional parasitosis, although some health professionals believe that Morgellons disease is a specific condition likely to be confirmed by future research.

大多数医生，包括皮肤科医生和精神病医生，关于莫吉隆斯症当作一种表现众所周知的医疗条件，包括妄想寄生虫病，但也有一些健康专家认为，莫吉隆斯症是一种特定条件下可能成为未来的研究证实。

And yet there is not in France, with its rich variety of soil and climate, a blade, a leaf, a root, a sprig , a peppercorn, which will grow to maturity under conditions more certain than those that have produced this horror.

然而在法兰西，尽管有各种各样的土壤和气候，却没有一棵草、一片叶、一道根、一条枝、一点微不足道的东西的生长成熟条件能比产生了这个怪物的条件更为一成不变的了。

The effect of IAA on pollen germination and pollen tube growth was in significant.

结论］珙桐花粉萌发和花粉管的生长因培养基组分和培养条件的的改变而不同，其花粉萌发和花粉管生长不仅需要一个适宜的组分浓度，也需要有一个合适的培养条件。

There are several processing mode of the unsteady Kuta condition, a appropriate choice will improve the convergence velocity of iterative, this paper has choosed the dipole intensity near the training edge is polynomial distribution to satisfy the unsteady Kuta condition by compare experiment.

非定常库塔条件的处理有多种，合适的处理方式有助于提高迭代收敛的速度，通过对不同处理方式的尝试比较，选取尾缘附近偶极子强度为多项式分布来满足非定常库塔条件。

All people will carry some genes that predispose them to one condition and that protect them against others.

所有人都带有某种基因，在某种条件下有致病倾向，而在其它条件下则可以能防病。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。