查询词典 heterogeneity

To investigate the spatial-dependence of heterogeneity at multiple scales for a community, we selected a representative plot of 100 m×100 m in the mountainous evergreen and deciduous mixed broad-leaved forest in Sichuan, southwest China (102°50'E, 30°02'N).The location of every tree was mapped by compass, and all-scale analysis of spatial structure of forest community was conducted by the method of PCNM (principal coordinates of neighbor matrices).

为了解植物群落在多尺度下的空间变异规律及其对空间尺度的依赖，以川西南山地阔叶混交林为对象，在有代表性的地段设立100m×100m样地，采用传统的罗盘仪对树体的相对空间位置进行定位，运用主轴邻距法(principal coordinates of neighbor matrices， PCNM)对群落空间结构的多尺度（100m内）特征进行了研究。

The old types oil pumping unit has many problems including over big torque and rod load peak at point of suspension , large heterogeneity and poor dynamic performance .

为解决在用的老型号抽油机存在的扭矩和悬点载荷峰值大，不均匀程度高，动力学性能较差等问题开展了抽油机柔性拖动控制技术研究与试验。

The study shows:(1) the generation of sulphur-bearing gas is controlled by the formation water;(2) the present distribution of hydrogen sulphide is the result of the segregation of water and gas, and it is also influenced by the heterogeneity of reservoirs;(3) the limited distribution of formation water is an important mechanism for forming gas fields of low sulphur content in China.

该问题的研究说明：①靖边气田含硫天然气生成过程始终受地层水控制；②现今硫化氢分布是气水分离结果，并受储层非均质限制；③揭示地层水体分布的局限性可能是形成我国低含硫气田的一个重要机制。

Because of the body's attachment, the athletes' attributes of human capital is derived as follows: self-initiative and motility, personal property attributes and mobility, timeliness, heterogeneity and sociality.

由于对人体的附着又派生出自利性与能动性、个人产权属性和流动性、时效性、异质性、社会性。

Many tree species at the same time and solve the spatial heterogeneity which empirical method could not achieve. Therefore, the assessment method could be applied in the selection of species for afforestation or species selection in the forest restoration areas.From collecting the attributes of planting species, spatial distribution data and environmental factors, we could integrate and analyze the data for further simulating the forest dynamics of forest in Taiwan. The impact of global change on forest also could be evaluated.

应用生育地因子评估树种之生态地位，能解决统计实证方法在空间异质性使用的限制，并可同时评估多种树种，因此可应用在造林树种之选择，亦可应用於崩塌地复育造林树种之选择，以及林相改良造林树种之选择，在收集更多树种属性与空间分布资料后，配合此评估方法，未来更可模拟出台湾森林之动态，以及评估环境变迁对台湾森林所造成的影响。

The effects of gas-liquid ratio, oil saturation and permeability on nitrogen foam flow law in porous media were studied systemly. Oil saturation is the main influential factor of foam's fluidity, and just for this, the aggravation of formation heterogeneity has little effect on the effect of the profile control, foam's flow law is decided by remaining oil distribution.

系统研究了气液比、含油饱和度、渗透率对氮气泡沫渗流规律的影响，结果表明，含油饱和度是影响氮气泡沫渗流阻力的最主要因素，泡沫渗流阻力随着含油饱和度的升高而降低，剩余油分布规律决定了调驱过程中氮气泡沫的渗流规律，受此影响，地层非均质性的增加对泡沫调剖效果的影响较小。

The results show that the native copper in North America has very low Pb content and exists obvious heterogeneity of Pb even in a single ore sample.

这对于区分北美遗址出土的北美自然铜铜器和欧洲冶炼铜铜器具有重要意义。

The results show that the native copper in North America has very low Pb content and exists obvious heterogeneity of Pb even in a single ore sample.

分析结果表明，北美自然铜铅含量极低，且同一矿区甚至同一样品内部铅含量存在明显的不均匀性。

Secondly, considering the complexity and heterogeneity of rock-like materials, two new models, namely the Inner Open Sliding Crack Model and the Single Wing Crack Model , are proposed. The two new models and the well-known Sliding Crack Model are consolidated as Zigzag Crack Model in this dissertation.

第二，针对岩石类材料的复杂性和非均质性提出两种新的模型：内张型滑动裂纹模型和单翼滑动裂纹模型，并将这两种模型和经典滑动裂纹统一为锯齿形裂纹模型。

Scattering wave ; scattering theory ; heterogeneity ; scattering characteristic ; metallic ore

散射波；散射理论；非均匀性；散射特征；金属矿

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。