密度

The densities for HNO3-UO2(NO3)2,NaCI-Na2SO. and KCI-Na2SO4 aqueous ablutions were measured with a high precision densimeter at 25℃. The apparent molal volumes were obtained from the measured densities. An empirical equation is introduced to correlate densities for mixed electrolyte aqueous solutions.

用高精度密度计测量了25℃下 HNO3－UO2（NO3）2， KCI－Na2SO4和NaCl－Na2SO4水溶液的密度从而求出了相应的表观摩尔体积；建立了用于混合电解质溶液密度关联的经验方程，用此方程对9个混合电解质水溶液体系的密度进行了关联，精度较高。

objective to explore the related factors of recurrence of chronic subdural hematoma after neurosurgery.methods the related aspects that affected the recurrence in 113 cases with chronic subdural hematomas after neurosurgery were reviewed,and the factors were evaluated by the medical literature.results 5 patients recured after neurosurgery,and 1 patient died.rate of recurrence and death were 4.4% and 0.9% respectively.conclusion age,abnornmal blood coagulation mechanism,density,pneumatosis and drainage volume would affect the prognosis.

目的 探讨影响慢性硬膜下血肿（chronic subdural hematoma，csdh）术后复发的因素。方法回顾2003～2004年本院手术治疗的113例csdh患者，并结合有关文献进行相关分析。结果术后复发5例，死亡1例，复发率和死亡率分别为4.4%和0.9%。复发的5例患者平均年龄69.6岁。其中因服用抗凝剂复发1例，因术后大量颅内积气复发1例，高密度复发1例，等密度到混杂密度复发2例。结论患者的年龄、凝血机制异常、血肿的密度、术后积气和引流量的多少影响csdh患者的预后。

The results show that under the action of the ponderomotive force of the coupling laser, there are a larger divergence of the density profile of the electron and ion in the laser-plasma than that without Compton scattering, the faster change of the electron density than the ion density, and the stronger electrostatic field than that without Compton scattering.

研究发现，在耦合激光的有质动力作用下，电子密度分布和离子密度分布比Compton散射前的偏离更加严重，电子密度的变化比离子密度的变化更快，产生的静电场更强。

Juveniles prefer to settle on new substrates higher than old substrates and recruit densities decrease as plate age in Pocilloporidae, but an opposite pattern was found in Poritidae.

鹿角与微孔珊瑚幼生附苗对新、旧基质有选择性，鹿角珊瑚在新基质上附苗密度较高，且附苗密度随基质放置时间增加而下降；但微孔珊瑚与鹿角珊瑚相反，在旧基质上附苗密度较高，且附苗密度随基质放置时间增加而显著增加。

Results The CT features were divided into three patterns:(1) irregular nodule with relatively well-defined margin, ground-glass opacity and a few punctate high densities.(2)irregular nodule with sharply circumscribed, spiculated border and homogeneous density.

结果 CT表现有3种：(1)不规则结节，磨玻璃样密度，其中见少数点状高密度灶；（2）不规则形状结节，边缘较清楚，边缘毛刺，密度均匀；（3）形状规则结节，边缘清楚，密度均匀。

A new method is described for determining the microwave dielectric properties of solid materials,for example agricultural products,mineral,of known densities from the dielectric properties of pulverized samples measured by employing the short circuited waveguide principle at a few different bulk densities.

本文介绍一个测定不能进行机械加工的&坚实材料&的微波介电特性的新方法。将这类材料研碎，成为&空气－粒子&混合物。应用短路波导方法，在几个不同的混合物&松密度&上测量其介电特性。当已知待测材料的&坚实密度&时，利用这些测量的特性与混合物&松密度&的线性函数关系进行&外推&，从而获得&坚实密度&下的农产品的微波介电特

Based on the relation betweenthe current density and the activation energy, the glass-phase exponent 〓the relaxation of current density in 〓times window, the criticalcurrent in a certain criterion of electric field as a function oftemparature infixed field or field in fixed temprature were calculated.

利用交流磁化率测量，得到了Hg-1201和Hg-1223样品的不可逆线，同时系统地研究了交变磁场频率和振幅对交流磁化率损耗峰的影响，并用非线性磁通扩散的模型解释了这些实验结果，从中推得与温度、直流场和电流密度有关的磁通跳跃激活能，由与电流密度有关的激活能推出描述玻璃相的指数μ，在10-5秒～10-2秒时间内的电流密度弛豫，E-j曲线，一定电场判据下的临界电流密度与磁场和温度的关系，从E-j曲线可以看出确实存在&零电阻电流&的玻璃相。

Spatial heterogeneity of the eggs and adults in higher density, adults in lower density were caused by random factors, but spatial variability of the 2~4 instars nymphs in the higher density, and of the eggs and 2~4 instars nymphs in the lower density were spatially autocorrelated.

在高密度下卵和成虫及低密度下成虫的空间异质性是由随机因素引起，而高密度下2~4龄若虫及低密度下卵和2~4龄若虫的空间异质性是由空间的自相关因素引起。

Having measured the crosslink density of vulcanizes in the atmosphere and ammonia,the types of crosslink density of vulcanizes are analyzed.

对改性的纳米二氧化硅分别用红外光谱和XPS进行表征，测定大气和氨氛围下硫化胶的交联密度，研究硫化胶的物理交联密度和化学交联密度对力学性能的影响，结果发现，随着纳米二氧化硅填充量的增加，总交联密度增大，当纳米二氧化硅填充量大于1。

However,aortie fatty streaks were strongly related to ante一mortem levels of both total and low一density liPopro一tein eholesterol(:=0.67,p.0001 for eaeh assoei一ation),independently of raee,sex,and age,andwere inversely eorrel...

但主动脉脂肪条纹与死前总胆固醇及低密度脂蛋白胆固醇水平密切相关r=0.67，P(0.000一，二者同，与种族、性别、年龄无关，而与高密度脂蛋白胆固醇对低密度及极低密度脂蛋白胆固醇之比成负相关r二一。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。