系统发生

In order to deal with the stochastic characters of fault location, fault type, fault clearing time, and load level etc., this paper proposed a transient stability probability analysis method based on curve fitting.

考虑电力系统发生故障时，故障位置、故障类型、故障切除时间以及负荷水平都具有随机性，提出了一种基于曲线拟合的暂态稳定概率评估方法。

So, questions remain unsolved regarding the origin time and pattern of pteridophyte and the internal phylogeny of its members. It is suggested that future studies of the origin and evolution of pteridophytes place emphasis on synthetic analysis of morphology, stratigraphic sequences, and multi-gene systematics.

它们的起源时间和方式及其内部各类群的系统发生关系等诸多问题的解决，还有待于大量形态学和不同分子水平上的实验数据的进一步积累，并结合其直接的化石证据进行综合研究。

Next, we study minimization problem of queuing time delay in network and signal quantization errors in control system based on average behavior of network rate.

针对在信息调度下和变速率采样的NCS模型，通过设计一组动态反馈故障检测滤波器，对系统发生的故障进行跟踪检测。

Secondarily , the paper infers to the over voltage multiple that it is likely to .

其次推导出系统发生谐振和误操作时可能出现的过电压倍数，并用实例加以验证。

We have identified 1452 GPCRs in the X.tropicalis genome.(2) Phylogenetic analyses classified these receptors into seven families, consisting of Glutamate,Rhodopsin,Adhesion,Frizzled,Secretin,Taste 2 and Vomeronasal 1.(3) X.tropicalis shares a more similar repertoire of GPCRs with mammals than it does with fish.

2严格的系统发生学分析将热带爪蟾G蛋白偶联受体分成了谷氨酸盐受体类，视紫红质类，粘着蛋白类，卷曲蛋白类，味觉2受体类，分泌素受体类和犁鼻骨1受体类这七个受体家族。

Now many biologists still regard SSU rRNA tree as the standard tree of life.

沃斯首先采用SSU rRNA序列研究原核生物的系统发生关系。

In biological systematics as a whole, phylogenetic analyses have become essential in researching the evolutionary tree of life.

从生物分类学总体上看，在对生命进化树的研究中，系统发生分析已成为必不可少的要素。

It caused the failure of telegraph systems in Europe and North America.

这导致在欧洲和北美的电报系统发生故障。

Descriptions of single new species may be accepted if accompanied by significant information on zoogeography, ecology, phylogenetic relationships, or other biological concerns.

如含有在动物地理、生态学、系统发生关系或在生物学其它方面具有显著意义的信息，可接受有关单个新种的简短描述。

ABSTRACT Living in a weightless environment often produces some adaptational and pathophysiological changes refered to as adverse effects.

在航天失重环境停留可引起机体多个系统发生一系列适应性改变和一些病理生理性的变化。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。