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It is found thatthere exist three modes in a magnetized, homogeneous, and collisional dusty plasma:the wholly damped mode due to the thermal diffusion, damped electrostatic dustacoustic wave, and damped electrostatic dust cyclotron wavediscovered by the dissertation for the first time; As neutral gas pressure increases,the damping rates of the EDA and EDC waves increase; The effects of dust densityon the EDA and EDC waves are remarkably different from unmagnetized orcollisionless plasma; A possible explanation to plasma crystallization is suggestedon the basis of the present results.

EDA的阻尼速度随中性气体压强的增大而增大,这一点与实验相符,对于EDC也存在同样的关系。尘粒密度对EDA波和EDC波的影响明显不同于非磁化或者无碰撞尘埃等离子体中的情况。当忽略碰撞时,阻尼的EDA和EDC波回到纯振荡波。最后就尘埃等离子体晶化给出了一个可能的解释。

Writh computer control,it realizes automation of gri- nding, proportionir1g,mixing,expanding, pelleting and packaging.

采用计算机控制,实现粉碎、配料、混合、膨化、制粒和包装自动化。

Optimal reaction conditions were as follows: PAAS and SMA at weight ratio of 4:1, stirring for emulsifying at speed of 1500 rpm and last 60 min, acidifying for 90 min, and the curing temperature under 50℃for 90 min.

优化配方及工艺条件为:聚丙烯酸钠和苯乙烯-马来酸酐按4:1混合作乳化剂,1500rpm搅拌,分散乳化60min,酸化90min,50℃固化90min作为制备二甲戊乐灵微胶囊的优化工艺条件,在此条件下可以得到平均粒径为9.6μm、粒度分布均匀、包封率在99%以上的球形微胶囊。

By adding different additive during carbonating process, cubic, spherical and chain calcium carbonate are prepared. Moreover, ultrasonic technique is used in the experiment.

通过在碳化反应过程中向反应溶液加入不同种类的添加剂,制备出了立方形、球形、链状碳酸钙,且其平均粒径均小于100nm。

Kanic acid was injected into guinea pigs' cochleae and the excitotoxicity model was established. After a week the recombinant plasmid was transferred into SGCs of guinea pigs' cochlea treated with HAT. The following week the expression of NT-3 was examined by the immunohistochemical method, and the morphology of SGNs was observed under the electronic microscope after 4 weeks, in the mean time the changes of auditory brain-stein response were examined.

通过耳蜗灌注海人酸(kainic acid, KA)建立豚鼠耳蜗兴奋性损伤模型,在给KA 1周后利用HAT携带重组质粒进行耳蜗灌注以转染耳蜗螺旋神经节细胞,免疫组化法观察转染后1周NT-3的表达及4周后电镜下螺旋神经节细胞形态学变化,同时观察对听觉脑干诱发电位(auditory brain-stem response, ABR)的影响。

With the increase of the deforested years, soil erodibility parameter increases.

2随着植被破坏开垦年限的增加,土壤容重逐渐增大,而毛管孔隙度逐渐减少;土壤水稳性团聚体呈减少趋势,且小团聚体所占比例逐渐增加;物理性粘粒随开垦年限的增加而减少,而粗粉砂呈增加趋势,表明土壤粗化现象明显。

The problems for choosing crushed stones in making of carbon fiber conductive concrete for deicing or snow-melting are discussed.

讨论了将用于路面融雪化冰的碳纤维导电混凝土在制作过程中石子的选择问题,提出了在制作发热用导电混凝土铺层时,掺入石子应遵循的3个基本原则:石子的掺量不能太多;不能和标准的混凝土一样,采取合理的级配;掺入的碎石粒径不能太大。

Based on the heat-sensitive and microcapsule technologies,the microcapsule material enwrapping the heat-sensitive dye with diameter size under 1 μm is synthesized.

结合热敏技术、微胶囊技术,在制备出粒径1μm以下热敏微胶囊基础上,测量了囊壁材料的玻璃化温度,对显影后的影像进行了对比。

When NO3– concentration increased to as high as 182 mmol/L, the ultrastructure of chloroplasts were damaged,and the number of grana in cells and number of lamellae in granas , the number of starch grains in cells as well as starch grain size all decreased.

结果表明,营养液中NO3–浓度在较低范围(14~98 mmol/L)内时,适当增加NO3–有利于净光合速率的提高,光饱和点的升高,羧化效率增大,淀粉粒增加,叶面积增加;有利于黄瓜幼苗光合物质的积累及植株的生长。

The technological processes of raw ore direct acid-leaching,raw ore salt roasting-water leching or acid leaching and raw ore salt roasting-acid pelletizing curing-acid leaching,etc.

原矿加盐焙烧水浸或酸浸;原矿加盐焙烧一拌酸制粒熟化酸浸等工艺过程。

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。