查询词典 average density

Based on GIS, this paper quantitatively analyses the relationship between population distribution and environmental factors including elevation, land use, road system and river system, and the relationship between population density and residential area density in Qinghai-Tibet plateau. These relationships lay a foundation for spatialization of population census data in the study area.

本文利用GIS工具定量地分析了青藏高原地区人口分布与海拔高度、土地利用、道路网、河流水系等环境因素的关系以及人口密度与居民点密度之间的关系，这些客观存在的关系是进行人口统计数据空间化的基础。

Results The main CT finds were as follow:①Bilaterial margins of the lesion were perpendicular to pleura with a straight cut edge presenting a square sign;②The density at the central area,some-times presenting a halo-like apperance;③Irre-gular or spiculate margins with illdefined outline could be seen;④There was extensive pleural thickening involving interlobar fissure as a response to inflamation;⑤There were small patches of slightly high density and intensified vascular markings surrounding the lesions;⑥After short-term anti-inflam-matory therrapy,most lesions were obviously reduced in size.

结果 26例球形肺炎的主要CT表现为：①邻近胸膜病变两侧缘垂直于胸膜呈刀切样平直边缘，病变呈方形；②病变中央密度高，边缘密度低，显示晕圈状改变；③病变边缘可不规则，有锯齿状改变且较模糊；④周围胸膜反应显著，有较广泛增厚；⑤病变周围血管纹理增多、增粗、扭曲，但无僵直和受牵拉；⑥抗炎治疗后病变明显吸收缩小。

Results Computer-assisted detection is useful to distinguish the malignant from the tumors. The sensitivity and specificity for mass by CAD system were 79.82%、55.20%. the character of mass, such as breast parenchymal density, mass shape, mass margins, mass density, spiculated, have especial affect on the CAD system, which is very similar to the distinguish malignant and benign from the tumors .

肿块密度、毛刺征、肿块形态、肿块边缘以及乳腺的腺体类型等这些影像学特征对CAD的诊断能力均有显著影响，P值均小于0.0001，而且其影响作用强度与肿块影像学征象对单纯肿块性病变的良恶性的诊断上有较好的相似性。

Non-stoma-related factors affected net photosynthetic rate changes under high-density conditions, while under low-density conditions stomatic factors affected net photosynthetic rate changes.

在高密度条件下非气孔因素影响净光合速率的变化，在中低栽培密度条件下，气孔因素影响净光合速率的变化。

The statistios of cracked density on roche moutomnee reflect the very strong plucking function on the lee side of its longitudinal profile with high density, width, depth of crack, the striations developed very well on the stoss side of it.

羊背石上的裂隙密度表明，其纵剖面上背冰面受拔蚀作用强、裂隙的密度、宽度和深度大；迎冰面则擦痕发育良好。

The results showed that:(1) some governing points, which were measured by submeter precision GPS, were utilized to correct the 1 m precision remote sensing image and it could satisfy the desired precision of geometrical correction, therefore, this method could be used as geometrical correction in the region where was short of the big scale relief map;(2) the density of the original data was the main factor to affect precision of the volume, and the precision of the calculated volume of earthwork could be improved to more than 90% when using the test points and feature points; the sparser the data density were, more significant could be improved; On the base that elevation of test points were measured by the submeter precision GPS, the error of the volume, which was produced by vectoring relief map to obtain DEM, could be calculated, and the calculation precision of the earthwork could be improved markedly.

结果表明：利用平面精度达亚米级的GPS测量控制点坐标对1米分辨率的遥感卫星影像进行几何校正，能够满足其几何校正的精度要求，可以解决缺乏大比例尺地形图地区的高分辨率遥感卫星影像的几何校正问题；通过对模型数据的分析，数据密度是影响体积精度的主要因素，利用检测点高程和特征点可以提高土方量计算的精度，使土方量计算的精度达到90％以上，数据密度越稀疏，精度提高越显著；采用高程精度达厘米级的RTK(Real Time Kinematic实时动态差分)测量检测点的高程，对用地形图扫描矢量化形成的DEM模型进行检测求出误差体积，可以大大提高土方量的计算精度。

In each subperiod,the static rank variance and the static density variance of the population are defined,thus the DMOPs is transformed into several bi-objective static optimization problems by using the static rank variance and the static density variance.

然后把动态多目标优化问题近似地转化成了若干个两个目标的静态优化问题。在给出的一种能自动检测环境变化的应答算子下，提出了一种动态多目标进化算法，同时证明了算法的收敛性。

Results:In this group there were 5 mucinous cystadenoma; 4 serous cystadenoma; 4 teratoma; 2 lager ovarian cyst; 4 subserous leiomyoma of uterine. The massive cystic-solid tumor with irregular cystic wall was seen in mucinous cystadenoma and serous cystadenoma; Teratoma appeared non homogenous density with fat density mass; Subserous leiomyoma of uterine showed large cystic tumor with clear edge, and the size of uterine was normal.

结果：5例卵巢浆液性囊腺瘤，4例黏液性囊腺瘤，CT表现为腹盆腔内巨大囊性或囊实性肿瘤，囊壁厚薄不均；4例卵巢畸胎瘤，CT表现为盆腔巨大肿瘤内部密度不均，可见脂肪密度影；卵巢巨大囊肿2例，CT表现为腹、盆内巨大单囊状肿物；4例浆膜下子宫肌瘤，CT表现为盆腔内巨大囊性肿物，边界清晰，子宫大小正常；1例阔韧带平滑肌瘤，CT表现为密度不均匀的实性肿物，增强扫描强化不均。

The statistic results showed that: Compared with the earward flow from the midtail, the nearEarth low latitude tailward flow from the ionosphere is characteristic of the lowtemperature and high density; With the tailward flow moving from the lobal region to the plasma sheet, the velocity of the tailward flow decrease, the density and the temperature increase. The tailward flow has distinct anisotropy depending on the difference of the parallel with perpendicular temperature.

对这516起尾向流的统计研究结果显示：（1）尾向流在从等离子体片边界层向等离子体片的运动过程中流速会逐渐减弱、密度逐渐增高，温度有逐渐下降的趋势；（2）对尾向流平行温度和垂直温度的分析显示不同等离子体区域的尾向流都有较明显的各向异性；（3）在从等离子体片边界层向等离子体片的运动过程中，尾向流逐渐趋向各向同性。

Results show that the basic density, air-dry density, bending strength, modulus of elasticity, and compressive strength parallel to grain of T.'zhongshansha 302' are higher than those of T. distichum, and the oven-dry shrinkage and the air-dry shrinkage in tangential and volume are lower than those of Taxodium distichum, and the differences are all prominent at the 0.05 level.

结果表明：中山杉302木材的基本密度、气干密度、抗弯强度、抗弯弹性模量和顺纹抗压强度的平均值均比落羽杉高，而弦向全干干缩率、体积全干千缩率、弦向气干干缩率、体积气干干缩率均比落羽杉低；其差异都在0.05水平显著。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。