程度较大的

Police occupational characteristic brings an important impact on their health because of mental hyperirritability. On some certain extent,it would come into being a tremendous adverse impression on our public security if we haven t effec- tive measures.

警察职业特点所带来的心理应激反应对警察身心健康的影响较大，从某种程度讲，如果没有妥善的应对之策，它将对我们的公安工作产生巨大的负面影响。

Therefore, traditional social culture system of female Hui of GQN areas is inveterately rooted on the Chinese culture on some degree and the stigma of Chinese traditional culture follows the development of the culture of female Hui all the time. Further, Islam religious culture pervades everywhere of female Hui, which makes it take on a more national and religious trait.

因此，甘青宁回族女性的传统社会文化体系在一定程度上根植于中国大文化背景的土壤之中，中国传统文化的烙印始终相随于回族女性社会发展的始末，并且伊斯兰宗教文化渗入回族女性发展的一切领域，使其呈现较强的民族性与宗教性。

On the basis of common theory about the probability-limited state for the structure, the author summarized the cracking law of this penstock and put forward a new definition of particular crack width to judge the structures limited state. This formula is simple and practicable, and it can be used for reference in engineering design.

文章从混凝土裂缝的基本理论出发，采用合理的计算模式，并结合压力管道结构的特殊性，推导出了在内水压力等因素的作用下钢衬钢筋混凝土压力管道最大裂缝宽度的计算公式，并和有限元软件ANSYS分析的结果进行了对比，两者的吻合程度较好。

Furthermore, various kinds of approximate matching errors (insertion, deletion, substitution, transposition) can be detected with different structures of rule combination unit. A probability model of packet matched is also proposed for large alphabet environment, which proves that the hardware scheme is practicable.

该并行模型有如下特点：①通过采用不同的规则组合器可完成插入、删除、替代和交换错误的近似匹配；②通过配置参数，可灵活控制近似匹配的程度；③可直接应用於大字符集语言下的纲络内容流分类；④针对中文环境做了概率建模，分析了并行硬件模型对纲络分组的匹配概率，证明该模型在一般情况下具有较好的可应用性。

The experiment is carried out to study factors of influence on particle grinding, which means that the factors of the influence on the grinding efficiency are related to fed material properities (the particle size, the particle hardness and moisture), the operation parameters and the structure of pulverizer.

对GLS销棒粉碎机粉碎的影响因素进行了实验研究，指出粉碎物料的物理性质（颗粒的粒径、硬度及湿度）、粉碎机的操作因素和粉碎机的内部结构对粉碎产品的超细程度影响较大，提出了提高粉碎效率的一些行之有效的办法。

It is shown that the effect of dynamic thermal tensioning by trailing intensive cooling is greatly influenced by the heat-dissipating conditions of the fixtures.Without uniform preheating it is difficult for trailing intensive cooling alone to create a saddle-shaped temperature field and the mechanism of reducing distortion is equivalent to the decrease of welding heat input. While combined with uniform preheating ,dynamic thermal tensioning comes into being to some degree and the effect of reducing distortion increases obviously.

研究表明，由随焊激冷造成的动态温差拉伸减小焊接变形的效果受夹具自身散热条件的影响较大：不采用整体预热时，难以造成马鞍形温度场，此时减小焊接变形的机理主要是焊接线能量的等效降低；采用整体预热后，能够造成一定程度的温差拉伸，减小焊接变形的效果明显提高。

Based on the analysis of the affected extent of the neutral-point potential by every space vector on all kinds of voltage and current conditions the concept named neutral point control grade was proposed for the first time in this paper. The calculation formulas of NPCG were presented as well. Based on NPCG, a novel modulation scheme called optimized 3D space vector modulation (O3DSVM) scheme was proposed in a-b-0 coordinates based on the translation principle of axes, by which the space vectors with higher NPCG values are selected to synthesize the object vector to suppress the unbalance of the neutral-point potential.

该文通过对各种电流电压状态下每个三维空间矢量对直流中点电位的影响进行分析，提出了"中点控制度"(neutral-point control grades，NPCG)的概念，并给出了NPCG的计算公式；基于NPCG，在a-b-0坐标系下提出一种基于坐标平移原理的新型"三维矢量优化选择调制策略"(optimized 3D space vector modulation，O3DSVM)，该调制策略能优化选择NPCG值较高的矢量以合成目标矢量，从而达到最大程度控制直流中点电位偏移的目的。

The index (Gst=0.5284) presentes that 52.84% molecular variation existes among subpopulations, 47.16% existes within subpopulations. There are changes of genetic differentiation from 0.0000 to 1.0000. In addition, the gene flow of Aristida pennata populations is 0.4426, which suggests relative limited gene flow may be one of important factor influencing on the genetic structure of the species.

亚种群间的基因分化系数为0.5284，即有52.84％的遗传多样性存在于种群间，有47.16％遗传多样性存在于种群内，各位点的遗传分化程度差别较大(0～1.0000)，其基因流为0.4462，不足以防止漂变引起的种群间的遗传分化。

Of the 36 tussah silkworm varieties, the Nei's genetic diversity index was 0.3243±0.1515, and Shannon information index was 0.4871±0.1975, suggesting that bivoltine tussah silkworm varieties are still rich in genetic diversity even having been conserved in the same place for quite long time. Nei's genetic identity of the 36 varieties ranged from 0.4959 to 0.8347, 96.59% of which was above 0.6, revealing large similarity between different varieties. A clustering analysis showed that these varieties formed two separate clades, one of which included varieties bred by the institute and the other included imported varieties from other provinces or countries.

供试品种资源的Nei氏遗传多样性指数为0.3243±0.1515，Shannon信息指数为0.4871±0.1975，表明长期同地保存的二化性柞蚕品种资源同样具有丰富的遗传多样性；供试品种的Nei氏遗传一致性范围在0.4959~0.8374之间，达0.6以上的占96.59%，表明多数品种资源的相似程度较高。36份品种资源分别以辽宁省蚕业科学研究所育成种为主和以国内外引进种为主聚为两大类群。

The phylogenetic trees supported that Eriocaulaceae be treated as Eriocaulales because this family always been a nature independent group connected with other families. Eriocaulaceae grouped with Commelinaceae, which supported the close relationship and parallel evolution between the two families. Juncaceae was not close to Eriocaulaceae and more primitive. The relationship between Juncaceae and Cyperaceae was closer than that between Juncaceae and Poaceae. Among these families, Poaceae was the most primitive family and far from Eriocaulaceae. Also in Eriocaulaceae, Eriocaulon was supported to be more primitive.

从构建的系统发育树可以得到：①谷精草科独立形成一个植物类群，支持谷精草科独立成为谷精草目；②谷精草科与鸭跖草科聚成一个大的类群，说明两科的亲缘关系较近，并且表现为平行进化；③灯心草科不近缘于谷精草科，与禾本科相比，灯芯草科与莎草科之间存在更近的亲缘关系；④在进化程度上，灯心草科比谷精草科原始；禾本科与谷精草科的亲缘关系最远，并且在这几个科中处于最原始的进化地位；⑤系统树还支持谷精草科内部的系统关系，支持谷精草属在谷精草科中的原始系统位置。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。