均匀分布

There were high density images shaped as rope and slip in lungs of model control group rats and the pleura near the images were a little thickening. In MTX treated group, there were high density images shaped as slice along pulmonary veins. The veins of the blood vessels were obscure and the edges were unclear. In TPT treated group,there were multiple high density images shaped as tubercle and slice and the boundary were not clear. In XFC treated group, the lungs' outlines were clear and the veins were welldistributed. High density images shaped as spot were found in part lungs.

结果：HRCT表现为模型对照组大鼠肺轮廓欠清晰，肺部血管影扩张，边缘模糊且不规则，两肺有索条状密度增高影，邻近胸膜轻度肥厚；甲氨喋呤组大鼠肺部可见沿着肺纹理分布的斑片状密度增高影，肺血管纹理模糊，边缘不清楚；雷公藤多苷片组大鼠两肺可见多发性结节状及斑片状密度增高影，境界欠清晰；新风胶囊组大鼠肺轮廓清晰，肺纹理分布均匀，部分肺组织显示斑点状密度增高影。

In order to study the processing mechanism of BCF, the distribution of total pressure and statical pressure inside and outside the texturing tube are discussed with the help of the pressure probe, and the result of the experiments is analyzed.

为了探求BCF变形加工机理，利用测压探针测试了导丝管内部及出口端外的总压和静压分布规律，实验结果表明导丝管内为气流分布不均匀、速度梯度大、不对称的紊流流场。

And the results indicate that the principal stress directions in study area are mainly NE-SW, and the second substage tectonic twist made the direction deflect from North to East, but the primary direction changed little; tectonic activities during the O〓～S～D stage is some violent, most of the area are under high stresses status, and rock fracture degree is correspondingly higher, as coinciding with the drill cores observation, i.

通过数值分析，模拟了塔中Ⅰ号断裂带和塔中45井三维模拟区O〓灰岩的构造应力场和应变场，结果表明：研究区主应力方向为北东～南西向，第二期的构造扭动使其由北向东发生了一定的偏转，但总的方位变化不大；O〓～S～D时期，塔中地区构造运动较强，研究区大部分处于高应力状态，岩石破裂程度较高，而岩芯观察结果也证实了这一结果，即O〓灰岩地层中早期形成的构造结构面比较发育，单个结构面的规模也较大；C～P时期，岩石的破坏程度较早期有所提高，主要表现在两个方面，一是各局部区岩石的破坏程度普遍有所提高；二是各个级别破裂区的分布范围相应地扩大了；研究区应力分布表现出明显的不均匀性，特别是剪应力，无论是O〓～S～D时期，还是C～P时期，都有很大的差异性，特别是在小断层的端部，剪应力比较集中，而且在断层的两盘，剪应力方向和大小都变化极快。

In this paper, nanopowders of rare earth oxides and tungsten were prepared and 0-3 type nano-composit rare earth tungsten thermionic emission materials were fabricated with novel technics. The raw material selection, preparation technic parameter, structure, physical and chemical characteristic, the rare earth distribution and the emission behavior were studied. The influence between the active layer and the thermionic emission performance, rare earth elements diffusion and distribution along depth were investigated in detail. The surplus RE formation and the electron transfer were discussed in theoretically. The thermionic emission current density of the single surplus RE on the active layer was educed. We adopted "liquid-liquid mixing, freeze-drying and two stage-reduction" working step firstly to produce the RE-W nanopowders including La-W powder, Ce-W powder and Y-W powder.

本文采用细化显微组织的新工艺，制备了纳米稀土钨粉末和0-3型纳米复合稀土钨热电子发射材料，探讨研究其原料选择、制备工艺及参数、结构特征、物理和化学特性、稀土分布均匀性、以及热电子发射特性；系统研究了稀土元素的高温扩散情况、高温状态下活性层中稀土的纵向深度分布、以及表面活性物质和活性层厚度对热发射性能的作用；从理论上分析阐释了超额稀土的形成及其电子的传递过程；并从理论上推导了活性层中单个超额稀土的热电子发射电流密度。

Uneven distribution of tideland sediment caused by the strong tidal current action in Hangzhou Bay, and nature ecological distribution of macrofaunal in the tideland, is a part reason of tideland environmental quality change.

杭州湾强烈的潮流作用导致的潮间带底质分布不均匀，以及底栖生物在潮间带的自然生态分布，是潮间带环境质量变化的部分原因。

Firstly, to work out the distribution features of underground nuclear explosion radioactive leak and γ-ray intensity of infinite uniform radioactive sample and limit radioactive sample inborehole axle.

对核爆炸放射性泄漏分布特征进行了理论计算，研究了无限均匀放射性样品和有限厚放射性样品γ射线沿井轴的分布计算。

Thirdly, the spatial distribution is more concentrative than the distribution of time intervals in amount of visitors of Chu-Kuo recreational area.

第三，游客量的时空分析上，时间间隔分布较均匀，而空间的分布较集中。

Through metallographic examination and microanalysis, it can be observed that at the weld interface of the joints there is a decarbonized layer on the S25C steel side and a carburized layer on the SUS405 steel side.

金相及显微分析可见，在焊接接头的结合界面上，S25C钢一侧存在脱碳层，SUS405钢一侧存在增碳层，这是造成接头组织分布及硬度分布不均匀的主要原因。

In total, 69 species of seeds were recorded in the soil seed bank, with a very low density of germinable seeds and most of them were buried in 2~5 cm in soil. Seedling density of C.

福建青冈天然林土壤种子库有69种植物种子，但种子数量较少，且分布不均匀，种子库中78.42%种子分布在2~5 cm土层中。

Res ults: The maxillary central incisor was similar to the maxillar y lateral incisor in stress distribution. The highest stresses were observed in the root surface, the liwest in the periodontal ligament, the alveolar bone between them .

结果：上颌中、侧切牙的应力分布基本相同；上颌中、侧切牙及其支持组织的应力分布不均匀，牙根部受应力最大，牙槽骨次之，牙周膜最小。

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。