种特征

The ratchetting experiments of 316L and 1Cr18Ni9Ti stainless steel cyclically loaded under proportional and nonproportional conditions were performed respectively.

通过对两种不锈钢材料分别进行比例和非比例应力循环加载棘轮效应试验，揭示了两种不锈钢材料的棘轮效应的一些特征，和导致这些棘轮效应特征的原因，得到了一些有意义的结果，为建立能较为精确地描述结构在多轴应力循环下的累积变形的本构模型提供了一定的实验及理论分析依

As revealed by the voltage topographic maps and the tomographic mapping, the source location of the distinct N1 is in the occipitotemporal areas.

并且，与单纯形状知觉任务相比，图形形状和空间位置知觉任务表现枕颞区N2波幅的显著减弱，P3潜伏期的王著缩短，额区的P2波幅的显著减弱；(3)脑电地形图与高分辨率断层成象显示，两种任务的特征波N1成分均来源于双侧的枕颞皮层，表明两种任务均涉及到与物体形状识别相关的视皮层腹侧通路，而差别波dN2成分来源于左侧枕颞区，暗示特征加工的差异主要发生在左侧枕颞区。

Based on morphologic and biomass measurement comparisons of morphology and resource allocation of Plantago major and P. depressacollected in the same environment have been made. The results show that quantitative relationships and resources allocations between different modules are proper in different species, they can reflect unprejudicedly ecological characteristics of individuals.

本文通过对取自同一生境条件下的两种车前属植物，即大车前和平车前(P 。depressa)不同构件间的形态学特征和生物量相关关系的比较分析，发现构件间的数量关系和各构件在资源配置上具有种间特异性，各构件生物量间的数量关系及各构件在资源配置上的数量关系，更能真实地反映出物种个体的生态学特征。

To find more suitable extraction algorithm for neural net recognizers, the applications of LPC sepstrum as well as the RW are investigated, and new procedures for the vector alignment and the normalization are proposed. The Time-Delay Neural Net model is generalized, and two kinds of non-uniformly windowed-time-windowed and component-windowed -pyramidical architectures are proposed.

为寻找比较适合于神经网络识别器的特征提取方法，文中研究了RW法和LPC倒谱系数特征提取法在神经网络中运用，并提出了一种新的时间对准和向量规整的方法；推广了时延神经网络模型，提出时间划分和分量划分两种加非均匀窗的金字塔状结构。

Resultantly, the individual warm/cold events in ENSO cycle appear to be partially locked to the annual cycle, and also exhibit obvious irregularity both in amplitude and in lasting time.

本文第四章研制设计了一包含海洋表面边界层和大气辐合反馈过程的热带太平洋海气耦合异常模式，进而利用该模式对ENSO循环进行了较为真实的模拟，通过对模式ENSO循环的演变特征及其形成机制的细致分析，建立了-ENSO循环的非线性分析模式，并提出了ENSO循环形成的一种更为客观的理论，指出：1）和观测事实类似，模式ENSO循环确实涉及了三种主要时间尺度过程即LF、QB和AC，其中LF为3-4年主周期振荡，QB占总方差10～20%；2）ENSO循环的正反馈机制是不稳定海气相互作用过程，且这一不稳定过程的发展在暖态中明显强于冷态；3）ENSO循环的负反馈机制在冷暖态中表现不同，在冷态消亡过程中，这种负反馈过程主要表现为西边界反射产生的时滞效应，但在暖态消亡过程中不存在类似的时滞效应，其负反馈过程主要表现为在海气耦合不稳定充分发展时伴随的赤道两侧冷水上翻过程的加强以及非线性过程的衰减作用抑制了不稳定的发展并最终使得系统回复至冷态；4）ENSO循环的3-4年主周期振荡是一非线性系统的自激振荡现象，其形成是线性系统的本征模即准两年振荡通过非线性机制产生的周期加倍所致，其中&单向性&大气辐合反馈加热过程对其形成至关重要；5）虽然年循环过程对ENSO循环形成没有本质影响，但它可明显影响ENSO循环的具体振幅和位相，使得ENSO对季节循环有明显的&锁相&特征，并且也使得ENSO循环在振幅大小和时间长短方面呈现出明显的不规则性。

The wood anatomy of 21 collections of 7 species within Kadsura Kaempf. ex Juss. and 14 collections of 8 species of Schisandra Michx., representing a large proportion of two genera in Schisandraceae, was investigated using light microscopy and scanning electron microscopy. Several features in the secondary xylem, such as types of vessel elements, arrangement of vessel-ray pitting, types of ray and shape of the body ray cells, show consistent characteristics at the family level, which support the view that Schisandraceae represents a monophyletic group.

在光学显微镜和扫描电镜下观察了南五味子属Kadsura 7种21个样品和五味子属Schisandra 8种14个样品的木材解剖特征，结果表明次生木质部的导管分子类型、导管－射线间纹孔的排列方式、射线类型、射线细胞形状等性状在科的水平上很稳定，这些共同特征都支持五味子科Schisandraceae是比较自然的类群。

Through comparative analysis on the pollen exine ornamentation of Lycoris we think that the pollen characters of Lycoris is relative steady and basically uniform, the shape of pollen grains are all long sphericity, all species have reticulate ornamentation, but there are large varieties between species in Lycoris on these aspects such as the pollen size , Finely reticulate ornamentation or coarsely reticulate ornamentation,psilate muri or curve muri,having spinulose or not and the spinulose position.

通过对石蒜属花粉外壁纹饰特征的比较分析，认为本属植物花粉特征较为稳定，形态基本一致，均为长球形花粉粒，花粉外壁均为网状纹饰；但在花粉大小、粗网或细网纹饰，网脊平滑或弯曲，有无小乳突或小瘤以及乳突着生部位等方面在种间有明显的变化，可以作为区分种的依据。3。

The remaining three species are much more difficult, at least from herbarium material, as staminate flowers seem to offer no useful characters; leaves on flowering specimens are often young, and therefore, generally small, and in all three species the leaf shape and size is variable, with character states overlapping between the species.

Flacourtia mollis的年轻的果可以被它的叶毛被认出，剩下的3 种更难分，至少从标本馆的标本上看如此，因为雄花好像没有提供有用的特征；在花标本上的叶经常幼嫩，因此，通常小，在全部3 种中叶的形状和尺寸是易变的，在物种之间具有重叠特征状态。

Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no ob...

结果：6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异；气孔表现出典型旱生植物的特征，略下陷，气孔保卫细胞被厚的角质层覆盖，并形成突起状角质唇状物；气孔大小、形状在种之间无明显区别；叶表面、茎表面气孔均属于无规则型，但形状明显不同，前者主要呈长方形或六边形，后者为窄条形或哑铃形。

Result:The stomatic density and characteristic of leaf epidermis and stem epidermis in six Ephedra species was differenc,there were no obvious morphological differences in stoma shape and size.

结果：6种麻黄属植物之间气孔密度、茎、叶表面特征存在不同程度的差异；气孔表现出典型旱生植物的特征，略下陷，气孔保卫细胞被厚的角质层覆盖，并形成突起状角质唇状物；气孔大小、形状在种之间无明显区别；叶表面、茎表面气孔均属于无规则型，但形状明显不同，前者主要呈长方形或六边形，后者为窄条形或哑铃形。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。