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It was concluded that:① soil deflation rates, at any certion wind velocity, decreased exponentially with the increase of G d ;② the effects of gravel mulch restraining soil deflation under 5 experinced gravel spread patters, at a certain G d , follow a order of Parallel strip spread

在一定的风力条件下，吹蚀速率随砾石覆盖密度的增加呈现指数递减变化；在一定的铺压密度下，不同铺压方式表现出不同的吹蚀抑制效应，从小到大依次是：平行条带铺压＜簇状铺压＜斜交条带铺压＜垂直条带铺压＜随机铺压。

A finite element model of 3-3 piezocomposites was established according to the homogenization method, which combined the techniques relying upon representative volume element and periodic boundary conditions.

压电复合材料是由至少一种压电材料与非压电材料按照一定的连通方式组合在一起而构成的一种具有压电效应的新材料[1]。3 3 型压电复合材料是指压电相和非压电相分别三维连通的压电复合材料。

The general situation and development of road roller at home and abroad is gave at the beginning of this thesis, including the different pressing mechanism of various rollers. It is analyzed that the useable range of various roller and their advantages and disadvantages. On the basis of model mechanism design and experiment of those self-moving vibrating pressing machine, it is reached the principle and program of a new type of pressing mechanism? double-frequency vibrating pressing machine.

本文首先介绍了国内外压实机械的概况和发展方向，以及各种压实机械的不同压实机理，分析了各压实机械的适用范围及其利弊，并且在自行式振动压实机样机的设计、性能试验的基础上，提出了多频振动压实理论，从而得出了一种新型压实机械—双频振动压实机及其设计原理和方案。

Results ①The most common lesions were the extragastric compressions caused by spleen, which accounted for 54.74%, followed by the enlarged gallblodder, hepatic cyst and carcinoma in the left lobe, left kidney, pancreatic cystic adenoma and pancreatic cyst.②The diagnostic accurancy of EUS was 100%, which was higher than that of USP.③Most of the lesions, benign or malignant, had normal structure of the gastric wall.④Splenomegaly only accounted for 38.46% in the lesions caused by the compression of spleen, which were slightly to moderately enlarged.⑤The location of the lesion was usually related to the organ which caused the extragastric compression.

结果 ①胃外压性隆起中脾脏压迫最多见，占54.74%，其余为肿大胆囊、肝右叶囊肿、肝左叶癌、左肾、胰腺囊腺瘤和胰腺囊肿；②EUS对胃外压性隆起的诊断正确率达100%，其对外压灶的完全显示率高于微超声探头；③良性胃外压灶及多数恶性肿瘤胃外压灶其所压胃壁结构均正常；④脾脏压胃者中脾肿大仅占38.46%，且均为轻、中度脾肿大；⑤胃隆起部位与外压灶的种类相关联。

The research result indicates that abnormal water levels are due to the following conditions: the P7 old piezometric hole was silted up, the impervious curtain in front of P8 and P9 old piezometric holes was weakened or there are some seepage channels between upstream face of sluice and these holes, and construction quality of P1, P7, P8, P9 new piezometric holes was not good enough.

研究表明，P7老测压孔水位异常在于该测压孔被淤堵，P8，P9老测压孔水位异常在于测压孔所在部位防渗帷幕效果被削弱，或坝体上游面与P8，P9老测压孔之间存在渗流通道；P1，P7，P8，P9新测压孔水位异常在于测压孔施工质量欠佳。

The flowfield and performance of a centrifugal compressor was predicted and analysed, which was composed of a Krain's impeller and two types of vaneless diffuser specially: one was constant area vaneless diffuser and the other was the straight-wall. The results show that the efficiency of the straight-wall vaneless diffuser is obviously lower than that of the constant area, and a separate flow occurs nearby the exit of the centrifugal impeller with the straight-wall diffuser. However, the type of vaneless diffuser has little influence on the aerodynamics performance of the centrifugal impeller. Finally, it is suggested that the constant-area vaneless diffuser should be selected as the downstream extended area of the centrifugal impeller during the prediction for the centrifugal impeller.

对Krain叶轮后带等面积与直壁两种形式的无叶扩压器离心压缩机内部流场进行了计算与分析，结果表明：直壁型无叶扩压器离心压缩机的效率低于等面积无叶扩压器离心压缩机的效率；直壁型无叶扩压器使得叶轮出口的流动出现分离；扩压器的形式对离心叶轮的整体气动性能影响并不大；在进行离心叶轮数值研究时，叶轮后的延伸区最好采用等面积无叶扩压器，以尽量减小无叶扩压器所引起的计算误差。

According to pressing dispersed features of debris cobbles mixture,it researches deeply on relationships between dry density and grinding rates or grinding times.

针对砂砾卵石混合料压实特性离散的特点，对其干密度与碾压速度的关系、干密度与碾压遍数的关系进行了深入的压实研究，通过对碾压前、碾压4遍、碾压6遍的筛分试验，对到粗粒填料压实前后的粒度成分的变化规律进行了研究。

In view of the fact that the honeycomb cardboards even pressure performance is mainly by the paper core decision and the performance, through to the honeycomb cardboard even pressure performances test analysis core papers gram again to the honeycomb cardboards even pressure performances influence, after as well as the different gram heavy honeycomb cardboard double-decked superimpositions even pressure performance analysis, discovered that each different gram heavy paper core the honeycomb cardboard experiences the elastoplasticity, the plasticity and the compaction in the process of packing distorts various stages; The even pressure intensity heavy increases along with the gram increases, and heavy increases the even pressure intensity along with the gram to increase is more obvious.

鉴于蜂窝纸板的平压性能主要是由纸芯决定和表现的，通过对蜂窝纸板平压性能的测试分析芯纸的克重对蜂窝纸板的平压性能的影响，以及不同克重蜂窝纸板双层叠加后的平压性能分析，发现各个不同克重纸芯的蜂窝纸板在压缩过程中都经历弹塑性、塑性和压实变形各阶段；平压强度随克重的增大而增大，并且随克重的增大平压强度增大更为明显。

In this paper, on the basis of the description of the pile-driving process and the dynamic analysis of the pile and the HSPD, the relationship between the frequency and the pile-driving force has been established under the conditions of the pile strength and the HSDP working requirements. The frequency character of the ZYB200B HSPD system has been analyzed quantitatively in the vibrancy pile-driving process, therefore the frequency range and the best available frequency have been obtained.

本文首先通过对压桩过程的描述和桩与液压静力沉桩机的力学分析，确立了液压振动压桩在桩的强度条件下和液压静力沉桩机工作要求下的压桩频率与压桩力幅值之间的关系；定量分析振动压桩时系统的频率特性，得出了ZYB200B型液压静力沉桩机振动压桩时压桩频率的取值范围和系统能得到的最佳频率值。

Measurirg indxes included:(1) Electrocardiograh;(2) Hemodynamics: cardiac output, pump output, aortic pressire, pulmo nary artery pressure, left atrium pressure, right atrium pressure, left ventricular end systolic pressure, left ventricular end diastolic pressure, LV-dp/dt, right ventricul ar end systolic pressure, RV-dp/dt, systolic pressure time index, diastolic pressure time index, endocardial viability ratio;(3) Myocardial metabolism: coronory sinus blood flow, myocardial oxygen consumption, myocardial lactate extractiorn;(4) Ischemic myocardial area;(5) Ultrastructure of myocardium.

测量指标包括：①心电图；②血流动力学：心输出量、泵输出量、主动脉压、肺动脉压、左房压、右房压、左室收缩末压、左室舒张末压、左室压的一阶导数、右室收缩末压、右室压的一阶导数、收缩压力时间指标、舒张压力时间指标、心内膜下心肌供血比率；③心肌代谢；冠状窦血流量、心肌氧耗量、心肌乳酸摄取量；④心肌缺血面积检查及缺血心肌的超微结构观察。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。