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Discusses the impact on the indoor particle pollutant from fresh air volume,fresh air filtration efficiency and outdoor air particle in the FCU+OA and two kinds of VAV air-conditioning systems. At the end of this paper it is poinped out that all-air system with mid-filtration can improve the capability of fresh air dilution and re indoor particle in a great deal and thus satisfy the requirements of health and comfort of occupants.

着重探讨了风机盘管加新风的空调系统和两种变风量空调系统形式中，新风量、新风过滤效率和室外含尘粒子对室内颗粒污染物的影响，最后指出对一次、二次风的混合风进行中效过滤的全空气系统，能够明显提高新风稀释和排除室内粉尘的能力，完全能够满足用户对环境日益增加的健康和舒适方面的要求。

Numerical simulations by assemblies of circular panicles can qualitatively reflect the general characteristics of liquefaction behavior of sand. The interval effect of aspect ratio of elliptical panicle on the mechanical behavior of numerical sample is obtained, and the reason is related to the initial average co-ordination number. The regularity of evolution of fabric in the process of sand liquefaction under cyclic loading can be qualitatively achieved by using the numerical sample randomly mixed of panicles with different shapes. Numerical simulations can not only demonstrate the macro phenomenon of particle breakage, mostly importantly, it can also expose the evolution of particle breakage microscopically, and would contribute to further research of the micromechanics of particle breakage.

研究结果表明：Hertz-Mindlin非线性接触模型适用于变围压条件下砂土力学性质模拟；纯圆颗粒模拟能够定性地反映饱和砂土振动液化的一般规律；颗粒长短比变化对砂土力学性质的影响具有区间效应，其原因与粒间初始平均接触数有关；不同形状随机混合试样能够从定性规律上反映振动液化过程中砂土的细观组构演化规律；数值模拟不仅可得到颗粒破碎宏观响应，而且可以分析内部接触力变化和实现对粘结破裂位置的追踪，从而可进一步研究颗粒破碎细观力学机制。

Against the characteristics of particles' movement in FST, the dissertation utilizes the advantages of three particle tracking methods, puts forward integrated particle tracking strategy, and realizes the particle tracking effetely.

针对脱硫塔中粒子运动的特点将3种方法有机地结合起来，充分利用了三种粒子跟踪算法的优点，实现了粒子轨迹的有效跟踪。

The results showed that the spatial distribution range of soil fertility in Qinling forest area on south slope was soil pH volue 5.97～6.89,organic matter 6.6～50.1 g·kg~-1, total N 0.5～3.8 g·kg~-1 ,available N 33.6～257.3 mg·kg~-1,available P 0.81～5.8 mg·kg~-1,available K 38.9～262.4 mg·kg~-1,clay particle content 11.3%～18.1%,capacity of exchangeable base 68.5～310.2 mmol·kg~-1 respectively; The spatial variation degree of available P, organic matter, and total N was big,whereas clay particle content and active acid pH value was small;the spatial variation degree of soil pH value, organic matter, available P, clay particle content, and capacity of exchangeable base decreased with the deep of soil,whereas soil total N、available N, and available K increased.

结果表明，秦岭南坡土壤肥力指标在整个土壤剖面空间分异范围分别为：土壤pH值5.97～6.89，有机质含量6.6～50.1 g·kg-1，土壤全N含量0.5～3.8 g·kg-1，碱解N含量33.6～257.3 mg·kg-1，速效P含量0.81～5.8 mg·kg-1，速效K含量38.9～262.4 mg·kg-1，粘粒含量11.3%～18.1%，阳离子代换量68.5～310.2 mmol·kg-1；其空间分异程度以速效P、有机质和土壤全N含量较大，土壤粘粒含量和土壤pH值较小；随着土层的加深，土壤pH值、有机质、速效P、土壤粘粒含量和阳离子代换量空间分异程度减小，而土壤全N、碱解N和速效K含量空间分异程度增大。

The Randomize Color compound adds a random value to all or just specific channels of the particle color so that each particle is emitted using a range of different colors. See ICE Particle Color.

Randomize Color随机颜色，这个复合节点可以给全部或者部分粒子的颜色添加随机值，使用这样的方式可以使发射出来的粒子在某个颜色范围内随机获得颜色。

The composite electroforming process of preparing nanometer alumina particle reinforced copper base composite material has phosphor copper plate as anode material, stainless steel sheet as cathode deposition body, nanometer level alumina particle as reinforcing particle, and fluorocarbide surfactant or formamide as co-deposition promoter.

一种纳米氧化铝颗粒增强铜基复合材料的复合电铸制备方法，用金属磷铜板作阳极材料，不锈钢片作为阴极沉积体，增强颗粒为纳米级氧化铝颗粒，采用氟碳阳离子表面活性剂或甲酰胺为共沉积促进剂。

Front-peak dominated double peak mode and double peak group mode were mainly found in the rain-particle samples, while the front-peaked dominated double peak group mode is mainly found in the rain-particle samples ofdry-season, and double peak group mode is mainly found in the rain-particle samples of wet-season.

正构烷烃分布模式呈现一定季节变化，干季雨水主要为单峰态模式分布，而平台型模式主要出现在春季的雨水中，夏季雨水则三种模式都有；干季雨水颗粒物主要为双峰态前峰型模式，而湿季则以要双峰态双峰型模式为主。

The DC GIL electrode which includes particle trap, particle driver and field-well ring is designed. Electric field distribution of this electrode is also emulated. The results indicate the triple structure can limit the activity of the metal conducting particle.

设计了包含微粒陷阱、微粒驱赶电极和屏蔽环的直流GIL电极结构，并对此进行了电场分布的仿真，结果表明此结构具有抑制金属导电微粒运动的作用。

On-line measuring of metallic ore powder particle is the main puzzle that confronts the researcher who is engaged in particle size research of the powder particle.

金属矿石粉末颗粒粒度的在线检测问题，一直是从事粉末颗粒粒度检测技术研究人员所要面对的难题之一。

Dynamic smoke aerosol of five European standard test fire,including open wood fire(TF1),smoldering cotton fire(TF3),polyurethane fire(TF4),N-heptan fire(TF5),and methylated spirits fire(TF6),was measured by Scanning Mobility Particle Sizer Spectrometer,and smoke particle size distribution and particle number concentration were recorded and analyzed for studying the smoke dynamic coagultion effect.

结果表明，在火灾探测器做出响应之前，正庚烷明火的烟颗粒粒径主要分布在100~500 nm，木材和聚氨酯明火及棉绳阴燃的是50~400 nm。

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。