系统发生

In order to study the polygenesis of AFP and the relationship between individual development and system development, the evolution of the albuminoid gene family was analyzed by analyzing the proteins of the gene family from different species by bioinformatics approaches, and drew a phylogenetic tree of different albumin domains from different proteins.

为了研究AFP的系统发生，并以此探讨系统发育与个体发育的关系，运用生物信息学手段，分析了不同物种中类白蛋白家族成员的进化关系，并对各分子的白蛋白结构域进行了进化归类。

In present review, focusing on the low-copy nuclear genes, we summarize the appli-cation of these genes in the phylogenetic reconstruction of allopolyploid plants and bring forward some critical issues in this field.

以低拷贝核基因为主线，概述了其在多倍体植物系统发生中的应用和相关注意事项，并对其在多倍体植物中的表达变化及其分子机制进行了探讨，系统地介绍了国际上相关领域的研究成果和最新动向。

For modern aircraft, the antiskid braking system is one of the key airborne equipment and plays a very important role in safe takeoff and landing.

防滑刹车系统是重要的机载设备，对飞机的起飞、着陆安全性有重要影响。因防滑刹车系统发生故障威胁飞机安全的事故时有发生。

In the paper, the stability of the static states of the system was discussed theoretically and the control parameter was determined nearby the point of Neimark-Sacker bifurcation.

首先利用理论分析了一个二维离散超混沌系统的不动点的稳定性，以此得到系统发生Neimark-Sacker分岔时参数α的近似值。

The retention system fails if it cannot support the mechanical loads or if the maximum instantaneous deflection of the retention system exceeds 30 mm.

保留系统发生故障，如果它不能支持的机械负荷或瞬时最大的偏转保留系统超过30毫米。

Based on the analysis on the relationship of the positive and the negative sequence impedance, also the positive and negative fault component current under simple and duplicate fault conditions, a cross-country fault identifier is proposed in this paper.

同杆并架输电线路故障的主要特点是有跨线故障，而当系统发生跨线故障时如果没有正确识别出来，那么保护就很有可能无选择性同时切除两条线路，从而对系统的安全稳定运行造成恶劣影响。

In the power system failure transient period of time, be able to quickly determine the correct faults, failure to prevent the further development or change.

在电力系统发生故障的暂态时期内，能快速正确判断故障，阻止故障发生变化或进一步发展。

It is presented in this paper that an analysis is done on maloperation of WXB-11 microprocessor based HF protection at transitional fault in Heilongjiang 220kV network in recent years.

文章对黑龙江省220kV电网近几年WXB-11型微机高频保护在系统发生转换性故障时发生误动进行了分析，说明了误动的原因，并提出了解决的方法。

In addition to the roles in ontogenic physiology, researches on the area of miRNA phylogenetic conservation and diversity suggested that miRNAs play important roles in animal evolution through driving phenotypic variations in development.

然而，除了在个体发生过程中的重要功能外，越来越多的研究表明，miRNA在系统发生中也扮演着关键的角色。

The author has made researches on the social occurrence of man's functions of symbols and finds out that the occurrence of babies' self-consciousness is achieved under the conditions babies have possessed dualistic attention-----that is to say, attention can concentrate on two signal sources at the same time or it has two focus of attention.

论文摘要本文作者对人的符号功能的社会系统发生进行了研究，发现婴儿自我意识的发生是在婴儿已经具有二元注意--即注意力能同时集中到两个信号源或者说有两个集中点--的条件下实现的，这种并行性注意使一种称为反身性条件反射建立成为可能，并形成了具有符号功能的神经机能组织--二联体。

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。