不均匀分布

The computational and experimental results indicated that fluid flow maldistribution was significant under various GHSV.

模拟和实验结果具有相同的变化趋势，而且结果表明不同空速下燃烧蒸发器中存在较大的浓度分布不均匀性，改变出口位置对浓度场的分布具有一定的改善作用。

Owing to the drawbacks of analytical shimming, this paper puts forward the concept of passive numerical shimming for searching a method of compensating Bz'easily to a high level and with a low cost. Based on the magnetic field caused by a magnetic moment, the distribution of moments in a superconducting NMR imaging megnet can be determined through some pseudoinversion algorithm directly from Bz'. The moments are used to compensate Bz'.

无源数值匀场的出发点直接是不均匀磁场的磁场偏差B〓本身；无源数值匀场的基础为磁性材料的磁矩所产生的磁场；由已知B〓，通过某种逆运算，确定磁性材料的磁矩在主磁体中的分布，实施此分布，以磁性材料的磁矩所产生的磁场直接对B〓进行补偿——这便是本文提出的无源数值匀场的概念。

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。

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。

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。

Adopting the model of uniform load and triangular load separately,MRFs of different story numbers and bay numbers are analyzed by static Pushover analytical method,and the global capacity envelopes are obtained.Then,through a method for establishing the inelastic demand spectrum of design intensity and rare intensity based on elastic spectrum of seismic design code for buildings,the structural target displacement of design intensity and rare intensity are estimated by improved capacity spectrum method.The corresponding structural ductility reduction factor,the overstrength factor,the structural influencing coefficient and displacement amplification factor are determined.

分别采用水平均匀分布力和倒三角分布力加载模式对不同层数和跨数的钢框架结构进行了静力推覆分析，并得到了结构的能力曲线，在此基础上，应用改进的能力谱法，以规范反应谱为基础建立设防烈度和罕遇烈度下的弹塑性需求谱，确定出结构在设防烈度和罕遇烈度下的目标位移，进而求解出结构的延性折减系数、超强系数、结构影响系数和位移放大系数等参数；同时，分析了不同加载模式、层数和跨数等对各系数的影响。

In addition,the unhomogeneous distribution of atmospheric density leads to refraction of ladar signals propagation,and turbulence in the atmosphere results in energy fluctuation in the cross-section,spread and drift of beams.

另外 ，由于大气密度分布不均匀导致激光沿光路上的折射，大气湍流效应导致光束横截面上能量分布起伏、光束扩展和漂移等，这些对激光雷光信号的传输产生一定的影响。

In this paper, the research has been given on the double weldable ceramic cutting tool by means of the acoustic microscope .

利用声学显微镜对双层可焊接陶瓷刀具材料进行研究，对双层材料界面及影响材料品质一致性的因素进行了分析，发现了两种材料在界面结合处分布不均匀及成块状分布等现象，并提出了改进材料设计的思路。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。