查询词典 density of distribution

The comparative study on vegetation background survey of the stationsand the comparison on level of phytocoenology on zonal habitats indicates thatthe diminishment of the numbers of families,genus and species,compositionof life types,diversity of communities and habitats,;and the increscence in theproportion of photosynthesis functional groups of C3/C4 plant,richness ofspecies,density of tussock and tiller,diversity of species,evenness,leaf areaindex,leaf area duration,dry matter production of communities alongside thelatitude increasing and the temperature decreasing;and the dynamic curve ofthe community productivity also tend to steadily increase along with thetemperature going up and the heat accumulation gradually in moderate-temperate steppe station from violent fluctuation along with seasonal badly-distribution of precipitation in warm-temperature steppe station;manifestingthat transformable tendency of productivity pattern of the community from morevigorous net assimilation,sparser and higher crops stricture of tussock and tiller,and possession on more resources by less species inclined to thicker in densityof crops,superior effectiveness of multi-leaves and pattern of multi-speciesresource sharing,reflecting that bigger disparity of the vegetationcharacteristics and the style of the community growth in the two differentthermal-type steppe stations owing to background of natural-historicenvironment and combination of water and heat.

内蒙古草原区两个不同热量型研究站点植被本底调查和显域地境群落学水平的比较研究表明：随纬度增加和气温降低，植物科、属、种的数目，生活型组成，群落类型和生境类型的多样性均趋于减少，而C3/C4光合功能群比值和群落的物种丰富度，株丛密度，物种多样性，群落均匀度，叶面积指数，叶面积持续时间和群落干物质生产能力均趋于增加，群落生产力动态曲线从随天然降水的季节分布不均而剧烈波动趋向于随气温逐渐升高和热量逐步积累而稳定增长，显示出两站点植物群落从较为旺盛的群体净同化作用、较为稀疏高大的群体结构和少数物种占有较多群落资源的生产力格局向较高的群体密度、优良的多叶性能和多物种资源共享的群落生产力格局转变，反映出在内蒙古草原区不同的自然历史环境背景和不同的温度条件及其水热组合状况影响下，两个不同热量型草原站点植被性质的分异特征和显域地境群落生长模式的较大差别。

The study on spatial distribution of the density of longevous people of Rugao County, Jiangsu Province, shows that the over-90 rate (number of people over 90 years old per 100000 in population) is high in some areas.

对江苏省如皋市长寿人口的空间分布研究表明，如皋市90岁以上长寿人口比率的空间分布具有地域聚集特徵，比率较高的区域分布在北部－东部－东南部发育较强的壤质雏形土和人为土上，在中西部的砂质雏形土和南部弱发育的年轻壤质－粘质雏形土上，比例较低。

It is indicated that: 1 at evidence level of 0.01, the chaffs dynamic RCS presents chi-square distribution at S-band and X-band; 2 the density of chaff cloud would decrease with time, which will result in lower RCS; and 3 with increasing of frequency and decreasing of wavelength, the coherence effect between different chaffs would get less, which will result in weaker fluctuation.

结果表明，当显著性水平为0.01时，该箔条云在S波段和X波段的动态RCS服从χ^2分布；箔条云形成之后，箔条密度随着时间的推移而下降，导致其RCS减小；随着频率升高而波长减小，箔条间互耦效应将减小，箔条云RCS的起伏也将减小。

Based on the research of influencing factors and regularities of distribution of loess side slope stability in Northwest, the author select Pingshuo Antaibao southern spoil bank as subject investigated, and abstract several the most rudimental influencing factors which are ubiquitous concerning slope stability in loess area such as sloping shape, slope ratio, bulk density, cohesive force, angle of internal friction, elastic modulus, Poisson ratio, water immersion.

本文在探讨黄土地区边坡稳定性的影响因素及其分布规律的基础之上，选取平朔安太堡南排土场为研究对象，抽象出对于黄土地区边坡稳定性具有普遍意义的几个最基本影响因子：坡型、坡比、容重、内聚力、内摩擦角、弹性模量、泊松比、水。

For example, a way in which place names may preserve a record of former topographical conditions has been pointed out in a recent article by Wilhelm Troll, who reconstructs the probable distribution of the forests on the glacial soils in the vicinity of Munich before the Thirty Years' War largely from the evidence supplied by toponyms correlated with the terrain.20 The relative abundance of names, or density of the place name cover, depends upon a variety of circumstances.

例如，在Wilhelm Troll最近的论文中已指出了一种据此地名可以保存关于以前地形条件记录的方法，他根据地名与地形的相互关系所提供的证据，重建了于30年前的战争之前在慕尼黑附近冰碛土上森林大概的分布。[20] 地名，或者地名覆盖密度的相对丰富与否取决于多种情况。

For example, a way in which place names may preserve a record of former topographical conditions has been pointed out in a recent article by Wilhelm Troll, who reconstructs the probable distribution of the forests on the glacial soils in the vicinity of Munich before the Thirty Years' War largely from the evidence supplied by toponyms correlated with the terrain.20 The relative abundance of names, or density of the place name cover, depends upon a variety of circumstances.

例如，在Wilhelm Troll最近的论文中已指出了一种据此地名能保存关于以前地形条件记录的办法，他根据地名与地形的相互关系所提供的证据，重建了于30年前的战争之前在慕尼黑附近冰碛土上森林大概的分布。[20] 地名，或者地名覆盖密度的相对丰富与否取决于多种情况。在密集移民的领地，地名自然是丰富的，但是它们在那些常常被游览但不曾被永久占据的地区同样是丰富的。·求助人工翻译，在线等！谢绝机器翻译！

objective the aim of this study is to investigate the expression and the distribution of the nerve growth factor during the period of neural tube development of human embryo.method early development of neural tube was studied in human embryos about 35 gestational days by using immunocytochemical abc technique.result there were ngf immuno-positive substances in the cytoplasm and nuclei of neuroepithelial cells in the ventricular zones of neural tube.in the intermediate zone of neural tube,ngf immunoreactivity was detected in the nuclei of some neurons,or the processes of other neurons which contained no ngf-immunoreactive substances in their nuclei;the expression pattern of ngf in the marginal zone of neural tube was similar to that of the intermediate zone.the density of ngf-immunorecative particles was higher on the rostrum side of neural tube than on the caudal side.the ngf immuno-positive cells were also observed among the somites of embryo under the neural tube.conclusion these results suggest that ngf was an important signal molecule to induce neural tube differentiation,and that ngf may play a significant role in regulation of the biological function of neurons in developing neural tube.

目的 研究捷安肽素的抗真菌作用机理。方法采用形态学方法和同位素标记法。显微形态观察经捷安肽素处理后的供试真菌的形态学变化。进一步采用14c同位素标记的特异底物&尿苷二磷酸-（14c）-葡萄糖&示踪，研究捷安肽素对真菌(1，3)-β-d-葡聚糖合成酶活性反应的影响。结果研究神经生长因子在早期人胚神经管发育过程中的定位表达。方法采用免疫细胞化学 abc法染色，研究35天人胚的发育情况。结果在人胚神经管的室管带中，神经元的细胞质和细胞核ngf免疫反应阳性；在中间带，一部分神经元的细胞核ngf免疫反应阳性，另外一部分神经元的细胞核ngf免疫反应阴性，而其突起ngf免疫反应阳性；在边缘带ngf的表达与中间带相似。在神经管的头侧ngf阳性反应较强，神经管的尾侧ngf阳性反应较弱。结论 ngf在人胚神经管免疫反应阳性，表明ngf可能是诱导神经管分化发育的重要信号分子，提示ngf可能在人胚神经管的发育中具有十分重要的作用。神经生长因子；人胚；神经管；发育

AbstractObjectives1 Correlate bone mineral densityto vertebral compressive strengths.2 Consummate the technique for percutaneous polymethylmethacrylate vertebroplasty and observe the pattern of PMMA imaging distribution.3 Determine the strength and stiffness of osteoporotic with or without vertebroplasty with PMMA bone cement.4 Correlation of BMD,insertion torque and pull-out strengths of pedicle screws.5 Ascertain whether augmentation with PMMA bone cement can enhance pedicle screw fixation in the osteoporotic spine.6 Ascertain whether augmentation pedicle screw fixation with PMMA bone cement can enhance the stability of unstable thoracolurner burst fractures of osteoporotic spine.

目 的1、测试椎体压缩强度，分析强度与骨矿物质密度（bone mineral density，BMD）的相关关系。2、观察经皮椎体成形术后聚甲基丙烯酸甲脂（polymethylme- thacrylate，PMMA）骨水泥在椎体内的形态学分布及影像学表现。3、比较PMMA骨水泥骨质疏松椎体成形术前/后椎体最大抗压力和压缩刚度的变化。4、分析椎体BMD、螺钉最大旅入力矩和最大拔出力三者之间的关系。5、分析PMMA骨水泥强化骨质疏松椎弓根螺钉后的螺钉的最大轴向拔出力和拔出刚度的变化。6、评价PMMA骨水泥强化骨质疏松椎弓根螺钉脊柱内固定对不稳定型胸腰椎损伤的即刻稳定性和反复载荷后的稳定性。

The quality of an object the greater the density of the distribution of the greater, then the stronger the gravitational field, the greater the curvature of space; corresponding to the time flow more slowly.

物体的质量越大，分布的密度越大，则引力场愈强，空间曲率愈大；相应地，时间流程愈慢。

Basing on the poission's equation of charge distribution and the transport equation of carriers, and considering the carriers' density of states as the two Gaussian distributions because of the energy disorders of organic molecules, we have studied self-consistently the effect of doping concentration and disordered degree on the mobility of carriers in the Alq3 flexible organic light-emitting diodes.

基于电荷分布的泊松方程和载流子输运方程，考虑最低能量非占据态和最高能量占据态的载流子态密度服从双高斯分布的模型，我们自洽地研究了掺杂浓度和无序对Alq3柔性有机发光二极管载流子迁移率的影响。

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。