粒子

In the coarse size range, calcium ions were the largest, and the water extract of the coarse particles showed alkaline reaction.

结果显示：在广州大气粒子中，NO3-主要存在于粗大粒子中，而且和其他物质结合在一起；在粗大粒子中，溶液呈碱性，而且钙离子的含量最大。

The surfaces of TiO2 particles were modified using ball grinder method and the rheological behavior of the nano-TiO2/LDPE composites material was researched by HAAKE Rheometer.The results of IR and SEM showed that the coupling agents are introduced to the nano-TiO2's surface.

湿法球磨条件下对TiO2粒子表面处理，经HAAKE流变仪测试纳米粒子TiO2/低密度聚乙烯复合材料的流变性，红外光谱和扫描电镜结果表明：通过球磨法可以获得纳米TiO2粉体，且铝酸酯偶联剂被成功引入到纳米粒子表面。

It reveals that the cavetation damage is more important than the cold-drawing for polymer toughening by rigid particles.

在此基础上讨论了①刚性有机粒子增韧、②刚性无机粒子增韧、③刚性粒子和橡胶混杂填充增韧聚合物的基本概念、分析方法、界面的作用、脆韧转变的判据和机理。

To better the application of PTV technique in complex surface flow field,an automatic image segmentation method based on frame difference and adaptive threshold was established,and particle signature identification was introduced,which bettered the effect of particle recognition and tracking in complex flow field.

为了改善粒子跟踪测速技术在复杂流场测速中的应用效果，本文采用基于帧间差分和自适应阈值的自动图像分割技术，引入粒子的特征标识，改善了复杂流场中粒子识别与运动跟踪的效果；另外，通过流速滤波、插值处理，提高了流速测量的精度。

PIC result shows that the alteration of spatial potential in the discharge space directly affected the distribution of the charged particles, it is just the fluctuation of potential distribution caused the density distribution of the charged particles, thus an alternating-electric field formed in the plasma space.

采用二维PIC-MCC方法对氮气对称结构射频放电进行了模拟研究，粒子模拟结果表明：放电空间内空间电势的变化直接影响了带电粒子的分布，正是电势分布的波动使得带电粒子的密度分布也出现了波动。等离子体空间内形成了交变电场。

The study of room temperature stability of P colloid emulsion shows the carboxylfunctionalized colloid particles cannot stay in water for a long time, but can be preserved after vacuum desiccation.

同时指出P乳胶粒子的水乳液不可长时间静置存放，但真空干燥后的乳胶粒子粉末可长期保存而不改变粒子形貌。

The findings suggest that dark matter particles interacted so that they "annihilated" each other, producing subatomic particles called quarks and their antimatter counterparts, antiquarks.

这些发现表明，暗物质粒子之间发生互相作用，互相&残杀&，结果产生了叫做夸克的亚原子粒子以及它们的反物质粒子——反夸克。

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。

However, a negative-energy tachyon propagating backward in time could be reinterpreted as a positive-energy tachyon propagating forward in time; some physicists think that such a reinterpretation would be the loophole through which the principle of causality might be preserved. J. Richard Gott proposed in 1973 that, after the Big Bang, a tripartite Universe may have been formed, consisting of universes of matter, ANTIMATTER and tachyons.

然而，带有负能量的超光速粒子回到过去可以重新解释为，带有正能量的超光速粒子可以传送到将来；一些物理学家认为通过这样一个重新解释可以避开因果关系法则。J·理查德·高特在1973年提出，大爆炸之后，可能形成了一个三重宇宙，分别包括物质世界，反物质世界和超光速粒子构成的世界。

The particle size of nanosized zinc carbonate is between 5 nm and 40 nm, and its kinetic parameters of thermal decomposition reaction---activation energy E and reaction order n are 110 kJ.mol－1 and 0.9, respectively.

用透射电子显微镜观察1号、2号和3号纳米碳酸锌粒子，可以看到粒子形状为椭球形，大小均匀，分散性好，没有明显的团聚现象，粒径分别在20～40nm、6～10nm、5～8nm之间；并且用微粒度测定仪测得了粉体的粒度分布图，表明纳米碳酸锌粒子的分布很窄。

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。